---
_id: '57894'
author:
- first_name: Rike Isabel
full_name: Große-Heilmann, Rike Isabel
id: '99511'
last_name: Große-Heilmann
orcid: 0000-0001-8713-3014
- first_name: Jan-Philipp
full_name: Burde, Jan-Philipp
last_name: Burde
- first_name: Josef
full_name: Riese, Josef
id: '429'
last_name: Riese
orcid: 0000-0003-2927-2619
- first_name: Thomas
full_name: Schubatzky, Thomas
last_name: Schubatzky
- first_name: David
full_name: Weiler, David
last_name: Weiler
citation:
ama: 'Große-Heilmann RI, Burde J-P, Riese J, Schubatzky T, Weiler D. Entwicklung
fachdidaktischen Wissens zum Einsatz digitaler Medien bei Lehramtsstudierenden
im Fach Physik. In: Herzig B, Eickelmann B, Schwabl F, Schulze J, Niemann J, eds.
Lehrkräftebildung in der digitalen Welt - Zukunftsorientierte Forschungs- und
Praxisperspektiven. Waxmann Verlag GmbH; 2024:135-150.'
apa: Große-Heilmann, R. I., Burde, J.-P., Riese, J., Schubatzky, T., & Weiler,
D. (2024). Entwicklung fachdidaktischen Wissens zum Einsatz digitaler Medien bei
Lehramtsstudierenden im Fach Physik. In B. Herzig, B. Eickelmann, F. Schwabl,
J. Schulze, & J. Niemann (Eds.), Lehrkräftebildung in der digitalen Welt
- Zukunftsorientierte Forschungs- und Praxisperspektiven (pp. 135–150). Waxmann
Verlag GmbH.
bibtex: '@inbook{Große-Heilmann_Burde_Riese_Schubatzky_Weiler_2024, place={Münster},
title={Entwicklung fachdidaktischen Wissens zum Einsatz digitaler Medien bei Lehramtsstudierenden
im Fach Physik}, booktitle={Lehrkräftebildung in der digitalen Welt - Zukunftsorientierte
Forschungs- und Praxisperspektiven}, publisher={Waxmann Verlag GmbH}, author={Große-Heilmann,
Rike Isabel and Burde, Jan-Philipp and Riese, Josef and Schubatzky, Thomas and
Weiler, David}, editor={Herzig, Bardo and Eickelmann, Birgit and Schwabl, Franziska
and Schulze, Johanna and Niemann, Jan}, year={2024}, pages={135–150} }'
chicago: 'Große-Heilmann, Rike Isabel, Jan-Philipp Burde, Josef Riese, Thomas Schubatzky,
and David Weiler. “Entwicklung fachdidaktischen Wissens zum Einsatz digitaler
Medien bei Lehramtsstudierenden im Fach Physik.” In Lehrkräftebildung in der
digitalen Welt - Zukunftsorientierte Forschungs- und Praxisperspektiven, edited
by Bardo Herzig, Birgit Eickelmann, Franziska Schwabl, Johanna Schulze, and Jan
Niemann, 135–50. Münster: Waxmann Verlag GmbH, 2024.'
ieee: 'R. I. Große-Heilmann, J.-P. Burde, J. Riese, T. Schubatzky, and D. Weiler,
“Entwicklung fachdidaktischen Wissens zum Einsatz digitaler Medien bei Lehramtsstudierenden
im Fach Physik,” in Lehrkräftebildung in der digitalen Welt - Zukunftsorientierte
Forschungs- und Praxisperspektiven, B. Herzig, B. Eickelmann, F. Schwabl,
J. Schulze, and J. Niemann, Eds. Münster: Waxmann Verlag GmbH, 2024, pp. 135–150.'
mla: Große-Heilmann, Rike Isabel, et al. “Entwicklung fachdidaktischen Wissens zum
Einsatz digitaler Medien bei Lehramtsstudierenden im Fach Physik.” Lehrkräftebildung
in der digitalen Welt - Zukunftsorientierte Forschungs- und Praxisperspektiven,
edited by Bardo Herzig et al., Waxmann Verlag GmbH, 2024, pp. 135–50.
short: 'R.I. Große-Heilmann, J.-P. Burde, J. Riese, T. Schubatzky, D. Weiler, in:
B. Herzig, B. Eickelmann, F. Schwabl, J. Schulze, J. Niemann (Eds.), Lehrkräftebildung
in der digitalen Welt - Zukunftsorientierte Forschungs- und Praxisperspektiven,
Waxmann Verlag GmbH, Münster, 2024, pp. 135–150.'
date_created: 2025-01-02T08:44:35Z
date_updated: 2025-01-02T08:47:17Z
department:
- _id: '299'
editor:
- first_name: Bardo
full_name: Herzig, Bardo
last_name: Herzig
- first_name: Birgit
full_name: Eickelmann, Birgit
last_name: Eickelmann
- first_name: Franziska
full_name: Schwabl, Franziska
last_name: Schwabl
- first_name: Johanna
full_name: Schulze, Johanna
last_name: Schulze
- first_name: Jan
full_name: Niemann, Jan
last_name: Niemann
language:
- iso: ger
page: 135-150
place: Münster
publication: Lehrkräftebildung in der digitalen Welt - Zukunftsorientierte Forschungs-
und Praxisperspektiven
publication_identifier:
isbn:
- 978-3-8309-4837-7
publisher: Waxmann Verlag GmbH
status: public
title: Entwicklung fachdidaktischen Wissens zum Einsatz digitaler Medien bei Lehramtsstudierenden
im Fach Physik
type: book_chapter
user_id: '99511'
year: '2024'
...
---
_id: '57908'
author:
- first_name: Melanie
full_name: Jordans, Melanie
id: '99324'
last_name: Jordans
- first_name: Josef
full_name: Riese, Josef
id: '429'
last_name: Riese
orcid: 0000-0003-2927-2619
citation:
ama: 'Jordans M, Riese J. Planung von Physikunterricht mit sinnvoller Einbettung
digitaler Medien: Welches Wissen wird dabei genutzt? In: van Vorst H, ed. Frühe
naturwissenschaftliche Bildung. Gesellschaft für Didaktik der Chemie und Physik.
Jahrestagung in Hamburg 2023. ; 2024:974-977.'
apa: 'Jordans, M., & Riese, J. (2024). Planung von Physikunterricht mit sinnvoller
Einbettung digitaler Medien: Welches Wissen wird dabei genutzt? In H. van Vorst
(Ed.), Frühe naturwissenschaftliche Bildung. Gesellschaft für Didaktik der
Chemie und Physik. Jahrestagung in Hamburg 2023 (pp. 974–977).'
bibtex: '@inproceedings{Jordans_Riese_2024, title={Planung von Physikunterricht
mit sinnvoller Einbettung digitaler Medien: Welches Wissen wird dabei genutzt?},
booktitle={Frühe naturwissenschaftliche Bildung. Gesellschaft für Didaktik der
Chemie und Physik. Jahrestagung in Hamburg 2023}, author={Jordans, Melanie and
Riese, Josef}, editor={van Vorst, Helena}, year={2024}, pages={974–977} }'
chicago: 'Jordans, Melanie, and Josef Riese. “Planung von Physikunterricht mit sinnvoller
Einbettung digitaler Medien: Welches Wissen wird dabei genutzt?” In Frühe naturwissenschaftliche
Bildung. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Hamburg
2023, edited by Helena van Vorst, 974–77, 2024.'
ieee: 'M. Jordans and J. Riese, “Planung von Physikunterricht mit sinnvoller Einbettung
digitaler Medien: Welches Wissen wird dabei genutzt?,” in Frühe naturwissenschaftliche
Bildung. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Hamburg
2023, 2024, pp. 974–977.'
mla: 'Jordans, Melanie, and Josef Riese. “Planung von Physikunterricht mit sinnvoller
Einbettung digitaler Medien: Welches Wissen wird dabei genutzt?” Frühe naturwissenschaftliche
Bildung. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Hamburg
2023, edited by Helena van Vorst, 2024, pp. 974–77.'
short: 'M. Jordans, J. Riese, in: H. van Vorst (Ed.), Frühe naturwissenschaftliche
Bildung. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Hamburg
2023, 2024, pp. 974–977.'
date_created: 2025-01-03T14:02:53Z
date_updated: 2025-01-03T14:08:50Z
department:
- _id: '299'
editor:
- first_name: Helena
full_name: van Vorst, Helena
last_name: van Vorst
language:
- iso: ger
page: 974-977
publication: Frühe naturwissenschaftliche Bildung. Gesellschaft für Didaktik der Chemie
und Physik. Jahrestagung in Hamburg 2023
status: public
title: 'Planung von Physikunterricht mit sinnvoller Einbettung digitaler Medien: Welches
Wissen wird dabei genutzt?'
type: conference
user_id: '99324'
year: '2024'
...
---
_id: '55386'
author:
- first_name: Claudia
full_name: Tenberge, Claudia
id: '67302'
last_name: Tenberge
- first_name: Franz
full_name: Schröer, Franz
id: '71764'
last_name: Schröer
orcid: 0000-0002-1445-3647
- first_name: Mareike
full_name: Bohrmann, Mareike
last_name: Bohrmann
citation:
ama: 'Tenberge C, Schröer F, Bohrmann M. Problemlösendes Lehren und Lernen mit Lernrobotern
& Co Transfer evidenzbasierter Innovationen durch Theorie-Praxis-Verzahnung.
In: Herzig B, Eickelmann B, Schwabl F, Schulze J, Niemann J, eds. Lehrkräftebildung
in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven.
Waxmann; 2024:151-168.'
apa: Tenberge, C., Schröer, F., & Bohrmann, M. (2024). Problemlösendes Lehren
und Lernen mit Lernrobotern & Co Transfer evidenzbasierter Innovationen durch
Theorie-Praxis-Verzahnung. In B. Herzig, B. Eickelmann, F. Schwabl, J. Schulze,
& J. Niemann (Eds.), Lehrkräftebildung in der digitalen Welt – zukunftsorientierte
Forschungs- und Praxisperspektiven (pp. 151–168). Waxmann.
bibtex: '@inbook{Tenberge_Schröer_Bohrmann_2024, place={Münster}, title={Problemlösendes
Lehren und Lernen mit Lernrobotern & Co Transfer evidenzbasierter Innovationen
durch Theorie-Praxis-Verzahnung}, booktitle={Lehrkräftebildung in der digitalen
Welt – zukunftsorientierte Forschungs- und Praxisperspektiven}, publisher={Waxmann},
author={Tenberge, Claudia and Schröer, Franz and Bohrmann, Mareike}, editor={Herzig,
Bardo and Eickelmann, Birgit and Schwabl, Franziska and Schulze, Johanna and Niemann,
Jan}, year={2024}, pages={151–168} }'
chicago: 'Tenberge, Claudia, Franz Schröer, and Mareike Bohrmann. “Problemlösendes
Lehren und Lernen mit Lernrobotern & Co Transfer evidenzbasierter Innovationen
durch Theorie-Praxis-Verzahnung.” In Lehrkräftebildung in der digitalen Welt
– zukunftsorientierte Forschungs- und Praxisperspektiven, edited by Bardo
Herzig, Birgit Eickelmann, Franziska Schwabl, Johanna Schulze, and Jan Niemann,
151–68. Münster: Waxmann, 2024.'
ieee: 'C. Tenberge, F. Schröer, and M. Bohrmann, “Problemlösendes Lehren und Lernen
mit Lernrobotern & Co Transfer evidenzbasierter Innovationen durch Theorie-Praxis-Verzahnung,”
in Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs-
und Praxisperspektiven, B. Herzig, B. Eickelmann, F. Schwabl, J. Schulze,
and J. Niemann, Eds. Münster: Waxmann, 2024, pp. 151–168.'
mla: Tenberge, Claudia, et al. “Problemlösendes Lehren und Lernen mit Lernrobotern
& Co Transfer evidenzbasierter Innovationen durch Theorie-Praxis-Verzahnung.”
Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und
Praxisperspektiven, edited by Bardo Herzig et al., Waxmann, 2024, pp. 151–68.
short: 'C. Tenberge, F. Schröer, M. Bohrmann, in: B. Herzig, B. Eickelmann, F. Schwabl,
J. Schulze, J. Niemann (Eds.), Lehrkräftebildung in der digitalen Welt – zukunftsorientierte
Forschungs- und Praxisperspektiven, Waxmann, Münster, 2024, pp. 151–168.'
date_created: 2024-07-25T09:27:41Z
date_updated: 2025-02-07T15:15:00Z
department:
- _id: '588'
editor:
- first_name: Bardo
full_name: Herzig, Bardo
last_name: Herzig
- first_name: Birgit
full_name: Eickelmann, Birgit
last_name: Eickelmann
- first_name: Franziska
full_name: Schwabl, Franziska
last_name: Schwabl
- first_name: Johanna
full_name: Schulze, Johanna
last_name: Schulze
- first_name: Jan
full_name: Niemann, Jan
last_name: Niemann
language:
- iso: ger
page: 151-168
place: Münster
publication: Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs-
und Praxisperspektiven
publication_identifier:
isbn:
- 978-3-8309-4837-7
publication_status: published
publisher: Waxmann
status: public
title: Problemlösendes Lehren und Lernen mit Lernrobotern & Co Transfer evidenzbasierter
Innovationen durch Theorie-Praxis-Verzahnung
type: book_chapter
user_id: '71764'
year: '2024'
...
---
_id: '59269'
abstract:
- lang: eng
text: Ferroelectric materials play a crucial role in a broad range of technologies
due to their unique properties that are deeply connected to the pattern and behavior
of their ferroelectric (FE) domains. Chief among them, barium titanate (BaTiO3;
BTO) sees widespread applications such as in electronics but equally is a ferroelectric
model system for fundamental research, e.g., to study the interplay of such FE
domains, the domain walls (DWs), and their macroscopic properties, owed to BTO’s
multiple and experimentally accessible phase transitions. Here, we employ Second
Harmonic Generation Microscopy (SHGM) to in situ investigate the cubic-to-tetragonal
(at ∼126°C) and the tetragonal-to-orthorhombic (at ∼5°C) phase transition in single-crystalline
BTO via three-dimensional (3D) DW mapping. We demonstrate that SHGM imaging provides
the direct visualization of FE domain switching as well as the domain dynamics
in 3D, shedding light on the interplay of the domain structure and phase transition.
These results allow us to extract the different transition temperatures locally,
to unveil the hysteresis behavior, and to determine the type of phase transition
at play (first/second order) from the recorded SHGM data. The capabilities of
SHGM in uncovering these crucial phenomena can easily be applied to other ferroelectrics
to provide new possibilities for in situ engineering of advanced ferroic devices.
article_number: '154102'
article_type: original
author:
- first_name: Benjamin
full_name: Kirbus, Benjamin
last_name: Kirbus
- first_name: Samuel D.
full_name: Seddon, Samuel D.
last_name: Seddon
- first_name: Iuliia
full_name: Kiseleva, Iuliia
last_name: Kiseleva
- first_name: Elke
full_name: Beyreuther, Elke
last_name: Beyreuther
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
citation:
ama: Kirbus B, Seddon SD, Kiseleva I, Beyreuther E, Rüsing M, Eng LM. Probing ferroelectric
phase transitions in barium titanate single crystals via in-situ second harmonic
generation microscopy. Journal of Applied Physics. 2024;136(15). doi:10.1063/5.0237769
apa: Kirbus, B., Seddon, S. D., Kiseleva, I., Beyreuther, E., Rüsing, M., &
Eng, L. M. (2024). Probing ferroelectric phase transitions in barium titanate
single crystals via in-situ second harmonic generation microscopy. Journal
of Applied Physics, 136(15), Article 154102. https://doi.org/10.1063/5.0237769
bibtex: '@article{Kirbus_Seddon_Kiseleva_Beyreuther_Rüsing_Eng_2024, title={Probing
ferroelectric phase transitions in barium titanate single crystals via in-situ
second harmonic generation microscopy}, volume={136}, DOI={10.1063/5.0237769},
number={15154102}, journal={Journal of Applied Physics}, publisher={AIP Publishing},
author={Kirbus, Benjamin and Seddon, Samuel D. and Kiseleva, Iuliia and Beyreuther,
Elke and Rüsing, Michael and Eng, Lukas M.}, year={2024} }'
chicago: Kirbus, Benjamin, Samuel D. Seddon, Iuliia Kiseleva, Elke Beyreuther, Michael
Rüsing, and Lukas M. Eng. “Probing Ferroelectric Phase Transitions in Barium Titanate
Single Crystals via In-Situ Second Harmonic Generation Microscopy.” Journal
of Applied Physics 136, no. 15 (2024). https://doi.org/10.1063/5.0237769.
ieee: 'B. Kirbus, S. D. Seddon, I. Kiseleva, E. Beyreuther, M. Rüsing, and L. M.
Eng, “Probing ferroelectric phase transitions in barium titanate single crystals
via in-situ second harmonic generation microscopy,” Journal of Applied Physics,
vol. 136, no. 15, Art. no. 154102, 2024, doi: 10.1063/5.0237769.'
mla: Kirbus, Benjamin, et al. “Probing Ferroelectric Phase Transitions in Barium
Titanate Single Crystals via In-Situ Second Harmonic Generation Microscopy.” Journal
of Applied Physics, vol. 136, no. 15, 154102, AIP Publishing, 2024, doi:10.1063/5.0237769.
short: B. Kirbus, S.D. Seddon, I. Kiseleva, E. Beyreuther, M. Rüsing, L.M. Eng,
Journal of Applied Physics 136 (2024).
date_created: 2025-04-02T15:57:11Z
date_updated: 2025-04-02T15:59:55Z
department:
- _id: '15'
- _id: '623'
- _id: '288'
doi: 10.1063/5.0237769
intvolume: ' 136'
issue: '15'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.1063/5.0237769'
oa: '1'
publication: Journal of Applied Physics
publication_identifier:
issn:
- 0021-8979
- 1089-7550
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
status: public
title: Probing ferroelectric phase transitions in barium titanate single crystals
via in-situ second harmonic generation microscopy
type: journal_article
user_id: '22501'
volume: 136
year: '2024'
...
---
_id: '59271'
abstract:
- lang: eng
text: Lithium niobate (LNO) and lithium tantalate (LTO) see widespread use in fundamental
research and commercial technologies reaching from electronics over classical
optics to integrated quantum communication. The mixed crystal system lithium niobate
tantalate (LNT) allows for the dedicate engineering of material properties by
combining the advantages of the two parental materials LNO and LTO. Vibrational
spectroscopies such as Raman spectroscopy or (Fourier transform) infrared (IR)
spectroscopy are vital techniques to provide detailed insight into the material
properties, which is central to the analysis and optimization of devices. This
work presents a joint experimental–theoretical approach allowing to unambiguously
assign the spectral features in the LNT material family through both Raman and
IR spectroscopy, as well as providing an in‐depth explanation for the observed
scattering efficiencies based on first‐principles calculations. The phononic contribution
to the static dielectric tensor is calculated from the experimental and theoretical
data using the generalized Lyddane–Sachs–Teller relation and compared with the
results of the first‐principles calculations.
author:
- first_name: Felix
full_name: Bernhardt, Felix
last_name: Bernhardt
- first_name: Soham
full_name: Gharat, Soham
last_name: Gharat
- first_name: Alexander
full_name: Kapp, Alexander
last_name: Kapp
- first_name: Florian
full_name: Pfeiffer, Florian
last_name: Pfeiffer
- first_name: Robin
full_name: Buschbeck, Robin
last_name: Buschbeck
- first_name: Franz
full_name: Hempel, Franz
last_name: Hempel
- first_name: Oleksiy
full_name: Pashkin, Oleksiy
last_name: Pashkin
- first_name: Susanne C.
full_name: Kehr, Susanne C.
last_name: Kehr
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Simone
full_name: Sanna, Simone
last_name: Sanna
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
citation:
ama: 'Bernhardt F, Gharat S, Kapp A, et al. Lattice Dynamics of LiNb(1–x)Ta(x)O3
Solid Solutions: Theory and Experiment. physica status solidi (a). 2024;222(1):2300968.
doi:10.1002/pssa.202300968'
apa: 'Bernhardt, F., Gharat, S., Kapp, A., Pfeiffer, F., Buschbeck, R., Hempel,
F., Pashkin, O., Kehr, S. C., Rüsing, M., Sanna, S., & Eng, L. M. (2024).
Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment. Physica
Status Solidi (a), 222(1), 2300968. https://doi.org/10.1002/pssa.202300968'
bibtex: '@article{Bernhardt_Gharat_Kapp_Pfeiffer_Buschbeck_Hempel_Pashkin_Kehr_Rüsing_Sanna_et
al._2024, title={Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory
and Experiment}, volume={222}, DOI={10.1002/pssa.202300968},
number={1}, journal={physica status solidi (a)}, publisher={Wiley}, author={Bernhardt,
Felix and Gharat, Soham and Kapp, Alexander and Pfeiffer, Florian and Buschbeck,
Robin and Hempel, Franz and Pashkin, Oleksiy and Kehr, Susanne C. and Rüsing,
Michael and Sanna, Simone and et al.}, year={2024}, pages={2300968} }'
chicago: 'Bernhardt, Felix, Soham Gharat, Alexander Kapp, Florian Pfeiffer, Robin
Buschbeck, Franz Hempel, Oleksiy Pashkin, et al. “Lattice Dynamics of LiNb(1–x)Ta(x)O3
Solid Solutions: Theory and Experiment.” Physica Status Solidi (a) 222,
no. 1 (2024): 2300968. https://doi.org/10.1002/pssa.202300968.'
ieee: 'F. Bernhardt et al., “Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions:
Theory and Experiment,” physica status solidi (a), vol. 222, no. 1, p.
2300968, 2024, doi: 10.1002/pssa.202300968.'
mla: 'Bernhardt, Felix, et al. “Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions:
Theory and Experiment.” Physica Status Solidi (a), vol. 222, no. 1, Wiley,
2024, p. 2300968, doi:10.1002/pssa.202300968.'
short: F. Bernhardt, S. Gharat, A. Kapp, F. Pfeiffer, R. Buschbeck, F. Hempel, O.
Pashkin, S.C. Kehr, M. Rüsing, S. Sanna, L.M. Eng, Physica Status Solidi (a) 222
(2024) 2300968.
date_created: 2025-04-02T16:04:58Z
date_updated: 2025-04-02T16:07:19Z
department:
- _id: '15'
- _id: '623'
- _id: '288'
doi: 10.1002/pssa.202300968
intvolume: ' 222'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1002/pssa.202300968
oa: '1'
page: '2300968'
publication: physica status solidi (a)
publication_identifier:
issn:
- 1862-6300
- 1862-6319
publication_status: published
publisher: Wiley
status: public
title: 'Lattice Dynamics of LiNb(1–x)Ta(x)O3 Solid Solutions: Theory and Experiment'
type: journal_article
user_id: '22501'
volume: 222
year: '2024'
...
---
_id: '59270'
abstract:
- lang: eng
text: Lithium niobate tantalate (LiNb1−xTaxO3, LNT) solid solutions offer exciting
new possibilities for applications ranging from optics, piezotronics, and electronics
beyond the capabilities of the widely used singular compounds of lithium niobate
(LiNbO3, LN) or lithium tantalate (LiTaO3, LT). Crystal growth of homogeneous
LNT single crystals by the Czochralski method is still challenging. One key aspect
of homogeneous growth is the accurate knowledge of thermal conductivity through
the crystal boule during the growth, which is central to control the crystal growth.
Therefore, the temperature dependent thermal conductivity of pure LN, LT, and
LNT solid solutions, as well as of selected doped LN and LT crystals (Mg, Zn)
was investigated across the temperature range from 300 to 1300 K. The results
that span across the whole composition range can directly be applied for optimizing
growth conditions of both LNT solid solutions as well as doped and undoped LN
and LT crystals.
article_number: '176549'
article_type: original
author:
- first_name: Umar
full_name: Bashir, Umar
last_name: Bashir
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Detlef
full_name: Klimm, Detlef
last_name: Klimm
- first_name: Roberts
full_name: Blukis, Roberts
last_name: Blukis
- first_name: Boris
full_name: Koppitz, Boris
last_name: Koppitz
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
- first_name: Matthias
full_name: Bickermann, Matthias
last_name: Bickermann
- first_name: Steffen
full_name: Ganschow, Steffen
last_name: Ganschow
citation:
ama: Bashir U, Rüsing M, Klimm D, et al. Thermal conductivity in solid solutions
of lithium niobate tantalate single crystals from 300 K up to 1300 K. Journal
of Alloys and Compounds. 2024;1008. doi:10.1016/j.jallcom.2024.176549
apa: Bashir, U., Rüsing, M., Klimm, D., Blukis, R., Koppitz, B., Eng, L. M., Bickermann,
M., & Ganschow, S. (2024). Thermal conductivity in solid solutions of lithium
niobate tantalate single crystals from 300 K up to 1300 K. Journal of Alloys
and Compounds, 1008, Article 176549. https://doi.org/10.1016/j.jallcom.2024.176549
bibtex: '@article{Bashir_Rüsing_Klimm_Blukis_Koppitz_Eng_Bickermann_Ganschow_2024,
title={Thermal conductivity in solid solutions of lithium niobate tantalate single
crystals from 300 K up to 1300 K}, volume={1008}, DOI={10.1016/j.jallcom.2024.176549},
number={176549}, journal={Journal of Alloys and Compounds}, publisher={Elsevier
BV}, author={Bashir, Umar and Rüsing, Michael and Klimm, Detlef and Blukis, Roberts
and Koppitz, Boris and Eng, Lukas M. and Bickermann, Matthias and Ganschow, Steffen},
year={2024} }'
chicago: Bashir, Umar, Michael Rüsing, Detlef Klimm, Roberts Blukis, Boris Koppitz,
Lukas M. Eng, Matthias Bickermann, and Steffen Ganschow. “Thermal Conductivity
in Solid Solutions of Lithium Niobate Tantalate Single Crystals from 300 K up
to 1300 K.” Journal of Alloys and Compounds 1008 (2024). https://doi.org/10.1016/j.jallcom.2024.176549.
ieee: 'U. Bashir et al., “Thermal conductivity in solid solutions of lithium
niobate tantalate single crystals from 300 K up to 1300 K,” Journal of Alloys
and Compounds, vol. 1008, Art. no. 176549, 2024, doi: 10.1016/j.jallcom.2024.176549.'
mla: Bashir, Umar, et al. “Thermal Conductivity in Solid Solutions of Lithium Niobate
Tantalate Single Crystals from 300 K up to 1300 K.” Journal of Alloys and Compounds,
vol. 1008, 176549, Elsevier BV, 2024, doi:10.1016/j.jallcom.2024.176549.
short: U. Bashir, M. Rüsing, D. Klimm, R. Blukis, B. Koppitz, L.M. Eng, M. Bickermann,
S. Ganschow, Journal of Alloys and Compounds 1008 (2024).
date_created: 2025-04-02T16:00:56Z
date_updated: 2025-04-02T16:02:26Z
department:
- _id: '15'
- _id: '288'
- _id: '623'
doi: 10.1016/j.jallcom.2024.176549
intvolume: ' 1008'
language:
- iso: eng
publication: Journal of Alloys and Compounds
publication_identifier:
issn:
- 0925-8388
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Thermal conductivity in solid solutions of lithium niobate tantalate single
crystals from 300 K up to 1300 K
type: journal_article
user_id: '22501'
volume: 1008
year: '2024'
...
---
_id: '59272'
abstract:
- lang: eng
text: 'Ferroelectrics such as LiNbO3 (LN) are wide-band-gap insulators that may
show a high local electric conductivity at the domain walls (DWs). The latter
are interfaces separating regions of noncollinear polarization, which can be manipulated
to build integrated nanoelectronic elements. In the present work, we model different
DW types in LN from first principles. Our models reveal the DW morphology and
shed light on their electronic properties: A strong band bending is predicted
for charged DWs, leading to local metallicity. Defect trapping at the DW may further
enhance the electric conductivity.'
article_number: L042015
author:
- first_name: Leonard M.
full_name: Verhoff, Leonard M.
last_name: Verhoff
- first_name: Mike N.
full_name: Pionteck, Mike N.
last_name: Pionteck
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Holger
full_name: Fritze, Holger
last_name: Fritze
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
- first_name: Simone
full_name: Sanna, Simone
last_name: Sanna
citation:
ama: 'Verhoff LM, Pionteck MN, Rüsing M, Fritze H, Eng LM, Sanna S. Two-dimensional
electronic conductivity in insulating ferroelectrics: Peculiar properties of domain
walls. Physical Review Research. 2024;6(4). doi:10.1103/physrevresearch.6.l042015'
apa: 'Verhoff, L. M., Pionteck, M. N., Rüsing, M., Fritze, H., Eng, L. M., &
Sanna, S. (2024). Two-dimensional electronic conductivity in insulating ferroelectrics:
Peculiar properties of domain walls. Physical Review Research, 6(4),
Article L042015. https://doi.org/10.1103/physrevresearch.6.l042015'
bibtex: '@article{Verhoff_Pionteck_Rüsing_Fritze_Eng_Sanna_2024, title={Two-dimensional
electronic conductivity in insulating ferroelectrics: Peculiar properties of domain
walls}, volume={6}, DOI={10.1103/physrevresearch.6.l042015},
number={4L042015}, journal={Physical Review Research}, publisher={American Physical
Society (APS)}, author={Verhoff, Leonard M. and Pionteck, Mike N. and Rüsing,
Michael and Fritze, Holger and Eng, Lukas M. and Sanna, Simone}, year={2024} }'
chicago: 'Verhoff, Leonard M., Mike N. Pionteck, Michael Rüsing, Holger Fritze,
Lukas M. Eng, and Simone Sanna. “Two-Dimensional Electronic Conductivity in Insulating
Ferroelectrics: Peculiar Properties of Domain Walls.” Physical Review Research
6, no. 4 (2024). https://doi.org/10.1103/physrevresearch.6.l042015.'
ieee: 'L. M. Verhoff, M. N. Pionteck, M. Rüsing, H. Fritze, L. M. Eng, and S. Sanna,
“Two-dimensional electronic conductivity in insulating ferroelectrics: Peculiar
properties of domain walls,” Physical Review Research, vol. 6, no. 4, Art.
no. L042015, 2024, doi: 10.1103/physrevresearch.6.l042015.'
mla: 'Verhoff, Leonard M., et al. “Two-Dimensional Electronic Conductivity in Insulating
Ferroelectrics: Peculiar Properties of Domain Walls.” Physical Review Research,
vol. 6, no. 4, L042015, American Physical Society (APS), 2024, doi:10.1103/physrevresearch.6.l042015.'
short: L.M. Verhoff, M.N. Pionteck, M. Rüsing, H. Fritze, L.M. Eng, S. Sanna, Physical
Review Research 6 (2024).
date_created: 2025-04-02T16:08:55Z
date_updated: 2025-04-02T16:10:59Z
department:
- _id: '623'
- _id: '288'
- _id: '15'
doi: 10.1103/physrevresearch.6.l042015
intvolume: ' 6'
issue: '4'
language:
- iso: eng
main_file_link:
- url: https://jlupub.ub.uni-giessen.de/server/api/core/bitstreams/fb2b09e6-c0f8-4209-99a1-79fc81d9b1f9/content
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society (APS)
status: public
title: 'Two-dimensional electronic conductivity in insulating ferroelectrics: Peculiar
properties of domain walls'
type: journal_article
user_id: '22501'
volume: 6
year: '2024'
...
---
_id: '59273'
abstract:
- lang: eng
text: Ferroelectric domain walls (DWs) are promising structures for assembling future
nano-electronic circuit elements on a larger scale since reporting domain wall
currents of up to 1 mA per single DW. One key requirement hereto is their reproducible
manufacturing by gaining preparative control over domain size and domain wall
conductivity (DWC). To date, most works on DWC have focused on exploring the fundamental
electrical properties of individual DWs within single-shot experiments, with an
emphasis on quantifying the origins of DWC. Very few reports exist when it comes
to comparing the DWC properties between two separate DWs, and literally nothing
exists where issues of reproducibility in DWC devices have been addressed. To
fill this gap while facing the challenge of finding guidelines for achieving predictable
DWC performance, we report on a procedure that allows us to reproducibly prepare
single hexagonal domains of a predefined diameter into uniaxial ferroelectric
lithium niobate single crystals of 200 and 300 μm thickness, respectively. We
show that the domain diameter can be controlled with an uncertainty of a few percent.
As-grown DWs are then subjected to a standard procedure of current-limited high-voltage
DWC enhancement, and they repetitively reach a DWC increase of six orders of magnitude.
While all resulting DWs show significantly enhanced DWC values, their individual
current–voltage (I–V) characteristics exhibit different shapes, which can be explained
by variations in their 3D real structure reflecting local heterogeneities by defects,
DW pinning, and surface-near DW inclination.
article_type: original
author:
- first_name: Julius
full_name: Ratzenberger, Julius
last_name: Ratzenberger
- first_name: Iuliia
full_name: Kiseleva, Iuliia
last_name: Kiseleva
- first_name: Boris
full_name: Koppitz, Boris
last_name: Koppitz
- first_name: Elke
full_name: Beyreuther, Elke
last_name: Beyreuther
- first_name: Manuel
full_name: Zahn, Manuel
last_name: Zahn
- first_name: Joshua
full_name: Gössel, Joshua
last_name: Gössel
- first_name: Peter A.
full_name: Hegarty, Peter A.
last_name: Hegarty
- first_name: Zeeshan H.
full_name: Amber, Zeeshan H.
last_name: Amber
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
citation:
ama: Ratzenberger J, Kiseleva I, Koppitz B, et al. Toward the reproducible fabrication
of conductive ferroelectric domain walls into lithium niobate bulk single crystals.
Journal of Applied Physics. 2024;136(10):104302. doi:10.1063/5.0219300
apa: Ratzenberger, J., Kiseleva, I., Koppitz, B., Beyreuther, E., Zahn, M., Gössel,
J., Hegarty, P. A., Amber, Z. H., Rüsing, M., & Eng, L. M. (2024). Toward
the reproducible fabrication of conductive ferroelectric domain walls into lithium
niobate bulk single crystals. Journal of Applied Physics, 136(10),
104302. https://doi.org/10.1063/5.0219300
bibtex: '@article{Ratzenberger_Kiseleva_Koppitz_Beyreuther_Zahn_Gössel_Hegarty_Amber_Rüsing_Eng_2024,
title={Toward the reproducible fabrication of conductive ferroelectric domain
walls into lithium niobate bulk single crystals}, volume={136}, DOI={10.1063/5.0219300},
number={10}, journal={Journal of Applied Physics}, publisher={AIP Publishing},
author={Ratzenberger, Julius and Kiseleva, Iuliia and Koppitz, Boris and Beyreuther,
Elke and Zahn, Manuel and Gössel, Joshua and Hegarty, Peter A. and Amber, Zeeshan
H. and Rüsing, Michael and Eng, Lukas M.}, year={2024}, pages={104302} }'
chicago: 'Ratzenberger, Julius, Iuliia Kiseleva, Boris Koppitz, Elke Beyreuther,
Manuel Zahn, Joshua Gössel, Peter A. Hegarty, Zeeshan H. Amber, Michael Rüsing,
and Lukas M. Eng. “Toward the Reproducible Fabrication of Conductive Ferroelectric
Domain Walls into Lithium Niobate Bulk Single Crystals.” Journal of Applied
Physics 136, no. 10 (2024): 104302. https://doi.org/10.1063/5.0219300.'
ieee: 'J. Ratzenberger et al., “Toward the reproducible fabrication of conductive
ferroelectric domain walls into lithium niobate bulk single crystals,” Journal
of Applied Physics, vol. 136, no. 10, p. 104302, 2024, doi: 10.1063/5.0219300.'
mla: Ratzenberger, Julius, et al. “Toward the Reproducible Fabrication of Conductive
Ferroelectric Domain Walls into Lithium Niobate Bulk Single Crystals.” Journal
of Applied Physics, vol. 136, no. 10, AIP Publishing, 2024, p. 104302, doi:10.1063/5.0219300.
short: J. Ratzenberger, I. Kiseleva, B. Koppitz, E. Beyreuther, M. Zahn, J. Gössel,
P.A. Hegarty, Z.H. Amber, M. Rüsing, L.M. Eng, Journal of Applied Physics 136
(2024) 104302.
date_created: 2025-04-02T16:12:29Z
date_updated: 2025-04-02T16:14:31Z
department:
- _id: '288'
- _id: '15'
- _id: '623'
doi: 10.1063/5.0219300
intvolume: ' 136'
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.1063/5.0219300'
oa: '1'
page: '104302'
publication: Journal of Applied Physics
publication_identifier:
issn:
- 0021-8979
- 1089-7550
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
status: public
title: Toward the reproducible fabrication of conductive ferroelectric domain walls
into lithium niobate bulk single crystals
type: journal_article
user_id: '22501'
volume: 136
year: '2024'
...
---
_id: '59274'
abstract:
- lang: eng
text: 'Recently, ion exchange (IE) has been used to periodically modify the coercive
field (Ec) of the crystal prior to periodic poling, to fabricate fine-pitch domain
structures in Rb-doped KTiOPO4 (RKTP). Here, we use micro-Raman spectroscopy to
understand the impact of IE on the vibrational modes related to the Rb/K lattice
sites, TiO octahedra, and PO4 tetrahedra, which all form the basis of the RKTP
crystal structure. We analyze the Raman spectra of three different RKTP samples:
(1) a RKTP sample that shows a poled domain grating only, (2) a RKTP sample that
has an Ec grating only, and (3) a RKTP sample that has both an Ec and a domain
grating of the nominally same spacing. This allows us to determine the impact
of IE on the vibrational modes of RKTP. We characterize the changes in the lower
Raman peaks related to the alkali-metal ions, as well as observe lattice modifications
induced by the incorporation of Rb+ that extend further into the crystal bulk
than the expected IE depth. Moreover, the influence of IE on the domain walls
is also manifested in their Raman peak shift. We discuss our results in terms
of the deformation of the PO4and TiO groups. Our results highlight the intricate
impact of IE on the crystal structure and how it facilitates periodic poling,
paving the way for further development of the Ec-engineering technique.'
article_number: '214115'
article_type: original
author:
- first_name: Cherrie S. J.
full_name: Lee, Cherrie S. J.
last_name: Lee
- first_name: Carlota
full_name: Canalias, Carlota
last_name: Canalias
- first_name: Robin
full_name: Buschbeck, Robin
last_name: Buschbeck
- first_name: Boris
full_name: Koppitz, Boris
last_name: Koppitz
- first_name: Franz
full_name: Hempel, Franz
last_name: Hempel
- first_name: Zeeshan
full_name: Amber, Zeeshan
last_name: Amber
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
citation:
ama: 'Lee CSJ, Canalias C, Buschbeck R, et al. Impact of ion exchange on vibrational
modes in Rb-doped KTiOPO4: A Raman spectroscopy study on the interplay between
ion exchange and polarization switching. Physical Review B. 2024;110(21).
doi:10.1103/physrevb.110.214115'
apa: 'Lee, C. S. J., Canalias, C., Buschbeck, R., Koppitz, B., Hempel, F., Amber,
Z., Eng, L. M., & Rüsing, M. (2024). Impact of ion exchange on vibrational
modes in Rb-doped KTiOPO4: A Raman spectroscopy study on the interplay between
ion exchange and polarization switching. Physical Review B, 110(21),
Article 214115. https://doi.org/10.1103/physrevb.110.214115'
bibtex: '@article{Lee_Canalias_Buschbeck_Koppitz_Hempel_Amber_Eng_Rüsing_2024, title={Impact
of ion exchange on vibrational modes in Rb-doped KTiOPO4: A Raman spectroscopy
study on the interplay between ion exchange and polarization switching}, volume={110},
DOI={10.1103/physrevb.110.214115},
number={21214115}, journal={Physical Review B}, publisher={American Physical Society
(APS)}, author={Lee, Cherrie S. J. and Canalias, Carlota and Buschbeck, Robin
and Koppitz, Boris and Hempel, Franz and Amber, Zeeshan and Eng, Lukas M. and
Rüsing, Michael}, year={2024} }'
chicago: 'Lee, Cherrie S. J., Carlota Canalias, Robin Buschbeck, Boris Koppitz,
Franz Hempel, Zeeshan Amber, Lukas M. Eng, and Michael Rüsing. “Impact of Ion
Exchange on Vibrational Modes in Rb-Doped KTiOPO4: A Raman Spectroscopy Study
on the Interplay between Ion Exchange and Polarization Switching.” Physical
Review B 110, no. 21 (2024). https://doi.org/10.1103/physrevb.110.214115.'
ieee: 'C. S. J. Lee et al., “Impact of ion exchange on vibrational modes
in Rb-doped KTiOPO4: A Raman spectroscopy study on the interplay between ion exchange
and polarization switching,” Physical Review B, vol. 110, no. 21, Art.
no. 214115, 2024, doi: 10.1103/physrevb.110.214115.'
mla: 'Lee, Cherrie S. J., et al. “Impact of Ion Exchange on Vibrational Modes in
Rb-Doped KTiOPO4: A Raman Spectroscopy Study on the Interplay between Ion Exchange
and Polarization Switching.” Physical Review B, vol. 110, no. 21, 214115,
American Physical Society (APS), 2024, doi:10.1103/physrevb.110.214115.'
short: C.S.J. Lee, C. Canalias, R. Buschbeck, B. Koppitz, F. Hempel, Z. Amber, L.M.
Eng, M. Rüsing, Physical Review B 110 (2024).
date_created: 2025-04-02T16:14:44Z
date_updated: 2025-04-02T16:18:34Z
department:
- _id: '288'
- _id: '15'
- _id: '623'
doi: 10.1103/physrevb.110.214115
intvolume: ' 110'
issue: '21'
language:
- iso: eng
publication: Physical Review B
publication_identifier:
issn:
- 2469-9950
- 2469-9969
publication_status: published
publisher: American Physical Society (APS)
status: public
title: 'Impact of ion exchange on vibrational modes in Rb-doped KTiOPO4: A Raman spectroscopy
study on the interplay between ion exchange and polarization switching'
type: journal_article
user_id: '22501'
volume: 110
year: '2024'
...
---
_id: '59275'
abstract:
- lang: eng
text: Studying and understanding many‐body interactions, particularly electron‐boson
interactions, is essential for a deeper elucidation of fundamental physical phenomena
and the development of novel material functionalities. Here, this aspect is explored
in the weak itinerant ferromagnet LaCo2P2 by means of momentum‐resolved photoelectron
spectroscopy (ARPES) and first‐principles calculations. The detailed ARPES patterns
enable to unveil bulk and surface bands, spin splittings due to Rashba and exchange
interactions, as well as the evolution of bands with temperature, which altogether
creates a solid foundation for theoretical studies. The latter has allowed to
establish the impact of electron‐boson interactions on the electronic structure,
that are reflected in its strong renormalization driven by electron‐magnon interaction
and the emergence of distinctive kinks of surface and bulk electron bands due
to significant electron‐phonon coupling. Our results highlight the distinct impact
of electron‐boson interactions on the electronic structure, particularly on the
itinerant d states. Similar electronic states are observed in the isostructural
iron pnictides, where electron‐boson interactions play a crucial role in the emergence
of superconductivity. It is believed that further studies of material systems
involving both magnetically active d‐ and f‐sublattices will reveal more advanced
phenomena in the bulk and at distinct surfaces, driven by a combination of factors
including Rashba and Kondo effects, exchange magnetism, and electron‐boson interactions.
author:
- first_name: D. Yu.
full_name: Usachov, D. Yu.
last_name: Usachov
- first_name: K.
full_name: Ali, K.
last_name: Ali
- first_name: G.
full_name: Poelchen, G.
last_name: Poelchen
- first_name: M.
full_name: Mende, M.
last_name: Mende
- first_name: S.
full_name: Schulz, S.
last_name: Schulz
- first_name: M.
full_name: Peters, M.
last_name: Peters
- first_name: K.
full_name: Bokai, K.
last_name: Bokai
- first_name: I. Yu.
full_name: Sklyadneva, I. Yu.
last_name: Sklyadneva
- first_name: V.
full_name: Stolyarov, V.
last_name: Stolyarov
- first_name: E. V.
full_name: Chulkov, E. V.
last_name: Chulkov
- first_name: K.
full_name: Kliemt, K.
last_name: Kliemt
- first_name: S.
full_name: Paischer, S.
last_name: Paischer
- first_name: P. A.
full_name: Buczek, P. A.
last_name: Buczek
- first_name: R.
full_name: Heid, R.
last_name: Heid
- first_name: F.
full_name: Hempel, F.
last_name: Hempel
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: A.
full_name: Ernst, A.
last_name: Ernst
- first_name: C.
full_name: Krellner, C.
last_name: Krellner
- first_name: S. V.
full_name: Eremeev, S. V.
last_name: Eremeev
- first_name: D. V.
full_name: Vyalikh, D. V.
last_name: Vyalikh
citation:
ama: Usachov DYu, Ali K, Poelchen G, et al. Unveiling Electron‐Phonon and Electron‐Magnon
Interactions in the Weak Itinerant Ferromagnet LaCo2P2. Advanced Physics Research.
Published online 2024. doi:10.1002/apxr.202400137
apa: Usachov, D. Yu., Ali, K., Poelchen, G., Mende, M., Schulz, S., Peters, M.,
Bokai, K., Sklyadneva, I. Yu., Stolyarov, V., Chulkov, E. V., Kliemt, K., Paischer,
S., Buczek, P. A., Heid, R., Hempel, F., Rüsing, M., Ernst, A., Krellner, C.,
Eremeev, S. V., & Vyalikh, D. V. (2024). Unveiling Electron‐Phonon and Electron‐Magnon
Interactions in the Weak Itinerant Ferromagnet LaCo2P2. Advanced Physics Research.
https://doi.org/10.1002/apxr.202400137
bibtex: '@article{Usachov_Ali_Poelchen_Mende_Schulz_Peters_Bokai_Sklyadneva_Stolyarov_Chulkov_et
al._2024, title={Unveiling Electron‐Phonon and Electron‐Magnon Interactions in
the Weak Itinerant Ferromagnet LaCo2P2}, DOI={10.1002/apxr.202400137},
journal={Advanced Physics Research}, publisher={Wiley}, author={Usachov, D. Yu.
and Ali, K. and Poelchen, G. and Mende, M. and Schulz, S. and Peters, M. and Bokai,
K. and Sklyadneva, I. Yu. and Stolyarov, V. and Chulkov, E. V. and et al.}, year={2024}
}'
chicago: Usachov, D. Yu., K. Ali, G. Poelchen, M. Mende, S. Schulz, M. Peters, K.
Bokai, et al. “Unveiling Electron‐Phonon and Electron‐Magnon Interactions in the
Weak Itinerant Ferromagnet LaCo2P2.” Advanced Physics Research, 2024. https://doi.org/10.1002/apxr.202400137.
ieee: 'D. Yu. Usachov et al., “Unveiling Electron‐Phonon and Electron‐Magnon
Interactions in the Weak Itinerant Ferromagnet LaCo2P2,” Advanced Physics Research,
2024, doi: 10.1002/apxr.202400137.'
mla: Usachov, D. Yu., et al. “Unveiling Electron‐Phonon and Electron‐Magnon Interactions
in the Weak Itinerant Ferromagnet LaCo2P2.” Advanced Physics Research,
Wiley, 2024, doi:10.1002/apxr.202400137.
short: D.Yu. Usachov, K. Ali, G. Poelchen, M. Mende, S. Schulz, M. Peters, K. Bokai,
I.Yu. Sklyadneva, V. Stolyarov, E.V. Chulkov, K. Kliemt, S. Paischer, P.A. Buczek,
R. Heid, F. Hempel, M. Rüsing, A. Ernst, C. Krellner, S.V. Eremeev, D.V. Vyalikh,
Advanced Physics Research (2024).
date_created: 2025-04-02T16:18:56Z
date_updated: 2025-04-02T16:20:41Z
department:
- _id: '288'
- _id: '623'
- _id: '15'
doi: 10.1002/apxr.202400137
language:
- iso: eng
publication: Advanced Physics Research
publication_identifier:
issn:
- 2751-1200
- 2751-1200
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Unveiling Electron‐Phonon and Electron‐Magnon Interactions in the Weak Itinerant
Ferromagnet LaCo2P2
type: journal_article
user_id: '22501'
year: '2024'
...
---
_id: '54967'
abstract:
- lang: eng
text: 'Ferroelectric domain wall conductivity (DWC) is an intriguing and
promising functional property that can be elegantly controlled and steered through
a variety of external stimuli such as electric and mechanical fields. Optical-field
control, as a noninvasive and flexible tool, has rarely been applied so far, but
it significantly expands the possibility for both tuning and probing DWC. On the
one hand, as known from second-harmonic or Raman micro-spectroscopy, the optical
approach provides information on DW distribution and inclination, while simultaneously
probing the DW vibrational modes; on the other hand, photons might be applied
to directly generate charge carriers, thereby acting as a functional and spectrally
tunable probe to deduce the local absorption properties and bandgaps of conductive
DWs. Here, we report on investigating the photo-induced DWC (PI-DWC) of three
lithium niobate crystals, containing a very different number of DWs, namely: (A)
none, (B) one, and (C) many conductive DWs. All three samples are inspected for
their current–voltage behavior in darkness and for different illumination wavelengths
swept from 500 nm down to 310 nm. All samples show their maximum PI-DWC at 310 nm;
moreover, sample (C) reaches PI-DWCs of several microampere. Interestingly, a
noticeable PI-DWC is also observed for sub-bandgap illumination, hinting toward
the existence and decisive role of electronic in-gap states that contribute to
the electronic charge transport along DWs. Finally, complementary conductive atomic
force microscopy investigations under illumination proved that the PI-DWC indeed
is confined to the DW area and does not originate from photo-induced bulk conductivity.'
article_type: original
author:
- first_name: L. L.
full_name: Ding, L. L.
last_name: Ding
- first_name: E.
full_name: Beyreuther, E.
last_name: Beyreuther
- first_name: B.
full_name: Koppitz, B.
last_name: Koppitz
- first_name: K.
full_name: Kempf, K.
last_name: Kempf
- first_name: J. H.
full_name: Ren, J. H.
last_name: Ren
- first_name: W. J.
full_name: Chen, W. J.
last_name: Chen
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Y.
full_name: Zheng, Y.
last_name: Zheng
- first_name: L. M.
full_name: Eng, L. M.
last_name: Eng
citation:
ama: Ding LL, Beyreuther E, Koppitz B, et al. Comparative study of photo-induced
electronic transport along ferroelectric domain walls in lithium niobate single
crystals. Applied Physics Letters. 2024;124(25). doi:10.1063/5.0205877
apa: Ding, L. L., Beyreuther, E., Koppitz, B., Kempf, K., Ren, J. H., Chen, W. J.,
Rüsing, M., Zheng, Y., & Eng, L. M. (2024). Comparative study of photo-induced
electronic transport along ferroelectric domain walls in lithium niobate single
crystals. Applied Physics Letters, 124(25). https://doi.org/10.1063/5.0205877
bibtex: '@article{Ding_Beyreuther_Koppitz_Kempf_Ren_Chen_Rüsing_Zheng_Eng_2024,
title={Comparative study of photo-induced electronic transport along ferroelectric
domain walls in lithium niobate single crystals}, volume={124}, DOI={10.1063/5.0205877},
number={25}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Ding,
L. L. and Beyreuther, E. and Koppitz, B. and Kempf, K. and Ren, J. H. and Chen,
W. J. and Rüsing, Michael and Zheng, Y. and Eng, L. M.}, year={2024} }'
chicago: Ding, L. L., E. Beyreuther, B. Koppitz, K. Kempf, J. H. Ren, W. J. Chen,
Michael Rüsing, Y. Zheng, and L. M. Eng. “Comparative Study of Photo-Induced Electronic
Transport along Ferroelectric Domain Walls in Lithium Niobate Single Crystals.”
Applied Physics Letters 124, no. 25 (2024). https://doi.org/10.1063/5.0205877.
ieee: 'L. L. Ding et al., “Comparative study of photo-induced electronic
transport along ferroelectric domain walls in lithium niobate single crystals,”
Applied Physics Letters, vol. 124, no. 25, 2024, doi: 10.1063/5.0205877.'
mla: Ding, L. L., et al. “Comparative Study of Photo-Induced Electronic Transport
along Ferroelectric Domain Walls in Lithium Niobate Single Crystals.” Applied
Physics Letters, vol. 124, no. 25, AIP Publishing, 2024, doi:10.1063/5.0205877.
short: L.L. Ding, E. Beyreuther, B. Koppitz, K. Kempf, J.H. Ren, W.J. Chen, M. Rüsing,
Y. Zheng, L.M. Eng, Applied Physics Letters 124 (2024).
date_created: 2024-07-01T21:03:23Z
date_updated: 2025-04-03T12:35:17Z
department:
- _id: '15'
- _id: '169'
- _id: '623'
doi: 10.1063/5.0205877
intvolume: ' 124'
issue: '25'
language:
- iso: eng
main_file_link:
- url: https://doi.org/10.1063/5.0205877
publication: Applied Physics Letters
publication_identifier:
issn:
- 0003-6951
- 1077-3118
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
status: public
title: Comparative study of photo-induced electronic transport along ferroelectric
domain walls in lithium niobate single crystals
type: journal_article
user_id: '22501'
volume: 124
year: '2024'
...
---
_id: '54966'
abstract:
- lang: eng
text: Piezoresponse force microscopy (PFM) is one of the most widespread methods
for investigating and visualizing ferroelectric domain structures down to the
nanometer length scale. PFM makes use of the direct coupling of the piezoelectric
response to the crystal lattice, and hence, it is most often applied to spatially
map the three-dimensional (3D) near-surface domain distribution of any polar or
ferroic sample. Nonetheless, since most samples investigated by PFM are at least
semiconducting or fully insulating, the electric ac field emerging from the conductive
scanning force microscopy (SFM) tip penetrates the sample and, hence, may also
couple to polar features that are deeply buried into the bulk of the sample under
investigation. Thus, in the work presented here, we experimentally and theoretically
explore the contrast and depth resolution capabilities of PFM, by analyzing the
dependence of several key parameters. These key parameters include the depth of
the buried feature, i.e., here a domain wall (DW), as well as PFM-relevant technical
parameters such as the tip radius, the PFM drive voltage and frequency, and the
signal-to-noise ratio. The theoretical predictions are experimentally verified
using x-cut periodically poled lithium niobate single crystals that are specially
prepared into wedge-shaped samples, in order to allow the buried feature, here
the DW, to be “positioned” at any depth into the bulk. This inspection essentially
contributes to the fundamental understanding in PFM contrast analysis and to the
reconstruction of 3D domain structures down to a 1 μm-penetration depth into the
sample.
article_type: original
author:
- first_name: Matthias
full_name: Roeper, Matthias
last_name: Roeper
- first_name: Samuel D.
full_name: Seddon, Samuel D.
last_name: Seddon
- first_name: Zeeshan H.
full_name: Amber, Zeeshan H.
last_name: Amber
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
citation:
ama: Roeper M, Seddon SD, Amber ZH, Rüsing M, Eng LM. Depth resolution in piezoresponse
force microscopy. Journal of Applied Physics. 2024;135(22). doi:10.1063/5.0206784
apa: Roeper, M., Seddon, S. D., Amber, Z. H., Rüsing, M., & Eng, L. M. (2024).
Depth resolution in piezoresponse force microscopy. Journal of Applied Physics,
135(22). https://doi.org/10.1063/5.0206784
bibtex: '@article{Roeper_Seddon_Amber_Rüsing_Eng_2024, title={Depth resolution in
piezoresponse force microscopy}, volume={135}, DOI={10.1063/5.0206784},
number={22}, journal={Journal of Applied Physics}, publisher={AIP Publishing},
author={Roeper, Matthias and Seddon, Samuel D. and Amber, Zeeshan H. and Rüsing,
Michael and Eng, Lukas M.}, year={2024} }'
chicago: Roeper, Matthias, Samuel D. Seddon, Zeeshan H. Amber, Michael Rüsing, and
Lukas M. Eng. “Depth Resolution in Piezoresponse Force Microscopy.” Journal
of Applied Physics 135, no. 22 (2024). https://doi.org/10.1063/5.0206784.
ieee: 'M. Roeper, S. D. Seddon, Z. H. Amber, M. Rüsing, and L. M. Eng, “Depth resolution
in piezoresponse force microscopy,” Journal of Applied Physics, vol. 135,
no. 22, 2024, doi: 10.1063/5.0206784.'
mla: Roeper, Matthias, et al. “Depth Resolution in Piezoresponse Force Microscopy.”
Journal of Applied Physics, vol. 135, no. 22, AIP Publishing, 2024, doi:10.1063/5.0206784.
short: M. Roeper, S.D. Seddon, Z.H. Amber, M. Rüsing, L.M. Eng, Journal of Applied
Physics 135 (2024).
date_created: 2024-07-01T21:00:43Z
date_updated: 2025-04-03T12:35:34Z
department:
- _id: '15'
- _id: '169'
- _id: '288'
- _id: '623'
doi: 10.1063/5.0206784
intvolume: ' 135'
issue: '22'
keyword:
- Ferroelectrics
- lithium niobate
- piezoresponse force microscopy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1063/5.0206784
oa: '1'
publication: Journal of Applied Physics
publication_identifier:
issn:
- 0021-8979
- 1089-7550
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
status: public
title: Depth resolution in piezoresponse force microscopy
type: journal_article
user_id: '22501'
volume: 135
year: '2024'
...
---
_id: '59259'
author:
- first_name: Tobias
full_name: Schwabe, Tobias
id: '39217'
last_name: Schwabe
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
- first_name: Niels
full_name: Staal, Niels
last_name: Staal
- first_name: Max
full_name: Schwengelbeck, Max
last_name: Schwengelbeck
- first_name: Laura
full_name: Bollmers, Laura
id: '61375'
last_name: Bollmers
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: J. Christoph
full_name: Scheytt, J. Christoph
id: '37144'
last_name: Scheytt
orcid: '0000-0002-5950-6618 '
citation:
ama: Schwabe T, Rüsing M, Staal N, et al. Quantum Photonic Systems in CMOS Compatible
Silicon Nitride Technology . Zenodo; 2024. doi:10.5281/zenodo.15124929
apa: Schwabe, T., Rüsing, M., Staal, N., Schwengelbeck, M., Bollmers, L., Padberg,
L., Eigner, C., Silberhorn, C., & Scheytt, J. C. (2024). Quantum photonic
systems in CMOS compatible silicon nitride technology . Zenodo. https://doi.org/10.5281/zenodo.15124929
bibtex: '@book{Schwabe_Rüsing_Staal_Schwengelbeck_Bollmers_Padberg_Eigner_Silberhorn_Scheytt_2024,
title={Quantum photonic systems in CMOS compatible silicon nitride technology
}, DOI={10.5281/zenodo.15124929},
publisher={Zenodo}, author={Schwabe, Tobias and Rüsing, Michael and Staal, Niels
and Schwengelbeck, Max and Bollmers, Laura and Padberg, Laura and Eigner, Christof
and Silberhorn, Christine and Scheytt, J. Christoph}, year={2024} }'
chicago: Schwabe, Tobias, Michael Rüsing, Niels Staal, Max Schwengelbeck, Laura
Bollmers, Laura Padberg, Christof Eigner, Christine Silberhorn, and J. Christoph
Scheytt. Quantum Photonic Systems in CMOS Compatible Silicon Nitride Technology
. Zenodo, 2024. https://doi.org/10.5281/zenodo.15124929.
ieee: T. Schwabe et al., Quantum photonic systems in CMOS compatible silicon
nitride technology . Zenodo, 2024.
mla: Schwabe, Tobias, et al. Quantum Photonic Systems in CMOS Compatible Silicon
Nitride Technology . Zenodo, 2024, doi:10.5281/zenodo.15124929.
short: T. Schwabe, M. Rüsing, N. Staal, M. Schwengelbeck, L. Bollmers, L. Padberg,
C. Eigner, C. Silberhorn, J.C. Scheytt, Quantum Photonic Systems in CMOS Compatible
Silicon Nitride Technology , Zenodo, 2024.
date_created: 2025-04-02T11:24:23Z
date_updated: 2025-04-03T12:34:56Z
department:
- _id: '288'
- _id: '15'
- _id: '623'
doi: 10.5281/zenodo.15124929
language:
- iso: eng
publisher: Zenodo
status: public
title: 'Quantum photonic systems in CMOS compatible silicon nitride technology '
type: misc
user_id: '22501'
year: '2024'
...
---
_id: '55387'
author:
- first_name: Franz
full_name: Schröer, Franz
id: '71764'
last_name: Schröer
orcid: 0000-0002-1445-3647
- first_name: Claudia
full_name: Tenberge, Claudia
id: '67302'
last_name: Tenberge
citation:
ama: Schröer F, Tenberge C. Was macht ein Roboter im Zoo? – Technisches Experimentieren
inklusiv gestalten. Lernen konkret - Sonderpädagogischer Schwerpunkt Geistige
Entwicklung. 43(3).
apa: Schröer, F., & Tenberge, C. (n.d.). Was macht ein Roboter im Zoo? – Technisches
Experimentieren inklusiv gestalten. Lernen konkret - Sonderpädagogischer Schwerpunkt
Geistige Entwicklung, 43(3).
bibtex: '@article{Schröer_Tenberge, title={Was macht ein Roboter im Zoo? – Technisches
Experimentieren inklusiv gestalten}, volume={43}, number={3}, journal={Lernen
konkret - Sonderpädagogischer Schwerpunkt Geistige Entwicklung}, publisher={westermann},
author={Schröer, Franz and Tenberge, Claudia} }'
chicago: Schröer, Franz, and Claudia Tenberge. “Was macht ein Roboter im Zoo? –
Technisches Experimentieren inklusiv gestalten.” Lernen konkret - Sonderpädagogischer
Schwerpunkt Geistige Entwicklung 43, no. 3 (n.d.).
ieee: F. Schröer and C. Tenberge, “Was macht ein Roboter im Zoo? – Technisches Experimentieren
inklusiv gestalten,” Lernen konkret - Sonderpädagogischer Schwerpunkt Geistige
Entwicklung, vol. 43, no. 3.
mla: Schröer, Franz, and Claudia Tenberge. “Was macht ein Roboter im Zoo? – Technisches
Experimentieren inklusiv gestalten.” Lernen konkret - Sonderpädagogischer Schwerpunkt
Geistige Entwicklung, vol. 43, no. 3, westermann.
short: F. Schröer, C. Tenberge, Lernen konkret - Sonderpädagogischer Schwerpunkt
Geistige Entwicklung 43 (n.d.).
date_created: 2024-07-25T09:38:13Z
date_updated: 2026-06-04T20:57:00Z
department:
- _id: '588'
intvolume: ' 43'
issue: '3'
language:
- iso: ger
publication: Lernen konkret - Sonderpädagogischer Schwerpunkt Geistige Entwicklung
publication_identifier:
issn:
- 0722-1843
publication_status: inpress
publisher: westermann
status: public
title: Was macht ein Roboter im Zoo? – Technisches Experimentieren inklusiv gestalten
type: journal_article
user_id: '71764'
volume: 43
year: '2024'
...
---
_id: '47868'
author:
- first_name: Claudia
full_name: Tenberge, Claudia
id: '67302'
last_name: Tenberge
citation:
ama: Tenberge C. Ungeliebte Tiere in der Stadt. Grundschule Sachunterricht.
2023;98:28-34.
apa: Tenberge, C. (2023). Ungeliebte Tiere in der Stadt. Grundschule Sachunterricht,
98, 28–34.
bibtex: '@article{Tenberge_2023, title={Ungeliebte Tiere in der Stadt}, volume={98},
journal={Grundschule Sachunterricht}, author={Tenberge, Claudia}, year={2023},
pages={28–34} }'
chicago: 'Tenberge, Claudia. “Ungeliebte Tiere in der Stadt.” Grundschule Sachunterricht
98 (2023): 28–34.'
ieee: C. Tenberge, “Ungeliebte Tiere in der Stadt,” Grundschule Sachunterricht,
vol. 98, pp. 28–34, 2023.
mla: Tenberge, Claudia. “Ungeliebte Tiere in der Stadt.” Grundschule Sachunterricht,
vol. 98, 2023, pp. 28–34.
short: C. Tenberge, Grundschule Sachunterricht 98 (2023) 28–34.
date_created: 2023-10-09T13:07:17Z
date_updated: 2023-10-09T13:14:21Z
department:
- _id: '588'
intvolume: ' 98'
language:
- iso: ger
page: 28-34
publication: Grundschule Sachunterricht
publication_status: published
status: public
title: Ungeliebte Tiere in der Stadt
type: journal_article
user_id: '67302'
volume: 98
year: '2023'
...
---
_id: '47885'
citation:
ama: "Vidita Urboniene •\tAthanasios Christopoulos Aušra Pažeraite, Christos Chytas,
Claudia Tenberge, Djurdja Timotijevic, Dobrivoje Lale Eric, Egle Vaivadiene, Felix
Winkelnkemper, Gabrielė Stupurienė, Gražina Šmitienė, Heidi Kaarto, Ingrida Mereckaite,
Julija Grigorjevaite, Kadri Mettis, Katarina Stekic, Kristof Van de Keere, Marjana
Brkic, Michael Lenke, Mikko-Jussi Laakso, Paulius Lukas Tamošiūnas, Sofia Karlsson,
Sven Hüsing, Jurga Turčinavičienė, Violeta Šlekienė, Mart Laanpere, and Vidita
Urboniene, ed. A PRACTICAL HANDBOOK ON EFFECTIVE DEVELOPMENT AND IMPLEMENTATION
OF STEAM TEACHING AT SCHOOL. online; 2023."
apa: "Vidita Urboniene , •\tAthanasios Christopoulos, Aušra Pažeraite, Christos
Chytas, Claudia Tenberge, Djurdja Timotijevic, Dobrivoje Lale Eric, Egle Vaivadiene,
Felix Winkelnkemper, Gabrielė Stupurienė, Gražina Šmitienė, Heidi Kaarto, Ingrida
Mereckaite, Julija Grigorjevaite, Kadri Mettis, Katarina Stekic, Kristof Van de
Keere, Marjana Brkic, Michael Lenke, Mikko-Jussi Laakso, Paulius Lukas Tamošiūnas,
Sofia Karlsson, Sven Hüsing, Jurga Turčinavičienė, Violeta Šlekienė, Mart Laanpere,
and Vidita Urboniene (Ed.). (2023). A PRACTICAL HANDBOOK ON EFFECTIVE DEVELOPMENT
AND IMPLEMENTATION OF STEAM TEACHING AT SCHOOL. online."
bibtex: '@book{Vidita Urboniene _2023, place={https://dose-project.eu/?page_id=38.},
title={A PRACTICAL HANDBOOK ON EFFECTIVE DEVELOPMENT AND IMPLEMENTATION OF STEAM
TEACHING AT SCHOOL}, publisher={online}, year={2023} }'
chicago: "Vidita Urboniene , •\tAthanasios Christopoulos, Aušra Pažeraite, Christos
Chytas, Claudia Tenberge, Djurdja Timotijevic, Dobrivoje Lale Eric, Egle Vaivadiene,
Felix Winkelnkemper, Gabrielė Stupurienė, Gražina Šmitienė, Heidi Kaarto, Ingrida
Mereckaite, Julija Grigorjevaite, Kadri Mettis, Katarina Stekic, Kristof Van de
Keere, Marjana Brkic, Michael Lenke, Mikko-Jussi Laakso, Paulius Lukas Tamošiūnas,
Sofia Karlsson, Sven Hüsing, Jurga Turčinavičienė, Violeta Šlekienė, Mart Laanpere,
and Vidita Urboniene , ed. A PRACTICAL HANDBOOK ON EFFECTIVE DEVELOPMENT AND
IMPLEMENTATION OF STEAM TEACHING AT SCHOOL. https://dose-project.eu/?page_id=38.:
online, 2023."
ieee: "•\tAthanasios Christopoulos Vidita Urboniene Aušra Pažeraite, Christos Chytas,
Claudia Tenberge, Djurdja Timotijevic, Dobrivoje Lale Eric, Egle Vaivadiene, Felix
Winkelnkemper, Gabrielė Stupurienė, Gražina Šmitienė, Heidi Kaarto, Ingrida Mereckaite,
Julija Grigorjevaite, Kadri Mettis, Katarina Stekic, Kristof Van de Keere, Marjana
Brkic, Michael Lenke, Mikko-Jussi Laakso, Paulius Lukas Tamošiūnas, Sofia Karlsson,
Sven Hüsing, Jurga Turčinavičienė, Violeta Šlekienė, Mart Laanpere, and Vidita
Urboniene, Ed., A PRACTICAL HANDBOOK ON EFFECTIVE DEVELOPMENT AND IMPLEMENTATION
OF STEAM TEACHING AT SCHOOL. https://dose-project.eu/?page_id=38.: online,
2023."
mla: "Vidita Urboniene , •\tAthanasios Christopoulos, Aušra Pažeraite, Christos
Chytas, Claudia Tenberge, Djurdja Timotijevic, Dobrivoje Lale Eric, Egle Vaivadiene,
Felix Winkelnkemper, Gabrielė Stupurienė, Gražina Šmitienė, Heidi Kaarto, Ingrida
Mereckaite, Julija Grigorjevaite, Kadri Mettis, Katarina Stekic, Kristof Van de
Keere, Marjana Brkic, Michael Lenke, Mikko-Jussi Laakso, Paulius Lukas Tamošiūnas,
Sofia Karlsson, Sven Hüsing, Jurga Turčinavičienė, Violeta Šlekienė, Mart Laanpere,
and Vidita Urboniene, editor. A PRACTICAL HANDBOOK ON EFFECTIVE DEVELOPMENT
AND IMPLEMENTATION OF STEAM TEACHING AT SCHOOL. online, 2023."
short: "•\tAthanasios Christopoulos Vidita Urboniene Aušra Pažeraite, Christos
Chytas, Claudia Tenberge, Djurdja Timotijevic, Dobrivoje Lale Eric, Egle Vaivadiene,
Felix Winkelnkemper, Gabrielė Stupurienė, Gražina Šmitienė, Heidi Kaarto, Ingrida
Mereckaite, Julija Grigorjevaite, Kadri Mettis, Katarina Stekic, Kristof Van de
Keere, Marjana Brkic, Michael Lenke, Mikko-Jussi Laakso, Paulius Lukas Tamošiūnas,
Sofia Karlsson, Sven Hüsing, Jurga Turčinavičienė, Violeta Šlekienė, Mart Laanpere,
and Vidita Urboniene, ed., A PRACTICAL HANDBOOK ON EFFECTIVE DEVELOPMENT AND IMPLEMENTATION
OF STEAM TEACHING AT SCHOOL, online, https://dose-project.eu/?page_id=38., 2023."
date_created: 2023-10-09T13:32:28Z
date_updated: 2023-10-09T13:32:36Z
department:
- _id: '588'
editor:
- first_name: "•\tAthanasios Christopoulos, Aušra Pažeraite, Christos Chytas, Claudia
Tenberge, Djurdja Timotijevic, Dobrivoje Lale Eric, Egle Vaivadiene, Felix Winkelnkemper,
Gabrielė Stupurienė, Gražina Šmitienė, Heidi Kaarto, Ingrida Mereckaite, Julija
Grigorjevaite, Kadri Mettis, Katarina Stekic, Kristof Van de Keere, Marjana Brkic,
Michael Lenke, Mikko-Jussi Laakso, Paulius Lukas Tamošiūnas, Sofia Karlsson, Sven
Hüsing, Jurga Turčinavičienė, Violeta Šlekienė, Mart Laanpere, and Vidita Urboniene "
full_name: "Vidita Urboniene , •\tAthanasios Christopoulos, Aušra Pažeraite, Christos
Chytas, Claudia Tenberge, Djurdja Timotijevic, Dobrivoje Lale Eric, Egle Vaivadiene,
Felix Winkelnkemper, Gabrielė Stupurienė, Gražina Šmitienė, Heidi Kaarto, Ingrida
Mereckaite, Julija Grigorjevaite, Kadri Mettis, Katarina Stekic, Kristof Van de
Keere, Marjana Brkic, Michael Lenke, Mikko-Jussi Laakso, Paulius Lukas Tamošiūnas,
Sofia Karlsson, Sven Hüsing, Jurga Turčinavičienė, Violeta Šlekienė, Mart Laanpere,
and Vidita Urboniene "
last_name: 'Vidita Urboniene '
language:
- iso: eng
place: https://dose-project.eu/?page_id=38.
publication_status: published
publisher: online
status: public
title: A PRACTICAL HANDBOOK ON EFFECTIVE DEVELOPMENT AND IMPLEMENTATION OF STEAM TEACHING
AT SCHOOL
type: book_editor
user_id: '67302'
year: '2023'
...
---
_id: '48633'
author:
- first_name: Melanie
full_name: Jordans, Melanie
id: '99324'
last_name: Jordans
- first_name: Josef
full_name: Riese, Josef
id: '429'
last_name: Riese
orcid: 0000-0003-2927-2619
citation:
ama: 'Jordans M, Riese J. Unterrichtsplanung mit sinnvoller Einbettung digitaler
Medien im PU. In: van Vorst H, ed. Lernen, Lehren und Forschen in einer digital
geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung
in Aachen 2022. ; 2023:794-797.'
apa: Jordans, M., & Riese, J. (2023). Unterrichtsplanung mit sinnvoller Einbettung
digitaler Medien im PU. In H. van Vorst (Ed.), Lernen, Lehren und Forschen
in einer digital geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik.
Jahrestagung in Aachen 2022 (pp. 794–797).
bibtex: '@inproceedings{Jordans_Riese_2023, title={Unterrichtsplanung mit sinnvoller
Einbettung digitaler Medien im PU}, booktitle={Lernen, Lehren und Forschen in
einer digital geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik.
Jahrestagung in Aachen 2022}, author={Jordans, Melanie and Riese, Josef}, editor={van
Vorst, Helena}, year={2023}, pages={794–797} }'
chicago: Jordans, Melanie, and Josef Riese. “Unterrichtsplanung mit sinnvoller Einbettung
digitaler Medien im PU.” In Lernen, Lehren und Forschen in einer digital geprägten
Welt. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Aachen
2022, edited by Helena van Vorst, 794–97, 2023.
ieee: M. Jordans and J. Riese, “Unterrichtsplanung mit sinnvoller Einbettung digitaler
Medien im PU,” in Lernen, Lehren und Forschen in einer digital geprägten Welt.
Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Aachen 2022,
2023, pp. 794–797.
mla: Jordans, Melanie, and Josef Riese. “Unterrichtsplanung mit sinnvoller Einbettung
digitaler Medien im PU.” Lernen, Lehren und Forschen in einer digital geprägten
Welt. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Aachen
2022, edited by Helena van Vorst, 2023, pp. 794–97.
short: 'M. Jordans, J. Riese, in: H. van Vorst (Ed.), Lernen, Lehren und Forschen
in einer digital geprägten Welt. Gesellschaft für Didaktik der Chemie und Physik.
Jahrestagung in Aachen 2022, 2023, pp. 794–797.'
date_created: 2023-11-06T17:06:33Z
date_updated: 2023-11-06T17:17:49Z
department:
- _id: '299'
editor:
- first_name: Helena
full_name: van Vorst, Helena
last_name: van Vorst
language:
- iso: ger
page: 794-797
publication: Lernen, Lehren und Forschen in einer digital geprägten Welt. Gesellschaft
für Didaktik der Chemie und Physik. Jahrestagung in Aachen 2022
status: public
title: Unterrichtsplanung mit sinnvoller Einbettung digitaler Medien im PU
type: conference
user_id: '99324'
year: '2023'
...
---
_id: '46573'
abstract:
- lang: eng
text: 'An ultra-fast change of the absorption onset for zincblende gallium-nitride
(zb-GaN) (fundamental bandgap: 3.23 eV) is observed by investigating the imaginary
part of the dielectric function using time-dependent femtosecond pump–probe spectroscopic
ellipsometry between 2.9 and 3.7 eV. The 266 nm (4.66 eV) pump pulses induce a
large electron–hole pair concentration up to 4×1020cm−3, which shift the transition
energy between conduction and valence bands due to many-body effects up to ≈500 meV.
Here, the absorption onset increases due to band filling while the bandgap renormalization
at the same time decreases the bandgap. Additionally, the absorption of the pump-beam
creates a free-carrier profile within the 605 nm zb-GaN layer with high free-carrier
concentrations at the surface, and low concentrations at the interface to the
substrate. This leads to varying optical properties from the sample surface (high
transition energy) to substrate (low transition energy), which are taken into
account by grading analysis for an accurate description of the experimental data.
For this, a model describing the time- and position-dependent free-carrier concentration
is formulated by considering the relaxation, recombination, and diffusion of those
carriers. We provide a quantitative analysis of optical experimental data (ellipsometric
angles Ψ and Δ) as well as a plot for the time-dependent change of the imaginary
part of the dielectric function.'
author:
- first_name: Elias
full_name: Baron, Elias
last_name: Baron
- first_name: Rüdiger
full_name: Goldhahn, Rüdiger
last_name: Goldhahn
- first_name: Shirly
full_name: Espinoza, Shirly
last_name: Espinoza
- first_name: Martin
full_name: Zahradník, Martin
last_name: Zahradník
- first_name: Mateusz
full_name: Rebarz, Mateusz
last_name: Rebarz
- first_name: Jakob
full_name: Andreasson, Jakob
last_name: Andreasson
- first_name: Michael
full_name: Deppe, Michael
last_name: Deppe
- first_name: Donat Josef
full_name: As, Donat Josef
id: '14'
last_name: As
orcid: 0000-0003-1121-3565
- first_name: Martin
full_name: Feneberg, Martin
last_name: Feneberg
citation:
ama: Baron E, Goldhahn R, Espinoza S, et al. Time-resolved pump–probe spectroscopic
ellipsometry of cubic GaN. I. Determination of the dielectric function. Journal
of Applied Physics. 2023;134(7). doi:10.1063/5.0153091
apa: Baron, E., Goldhahn, R., Espinoza, S., Zahradník, M., Rebarz, M., Andreasson,
J., Deppe, M., As, D. J., & Feneberg, M. (2023). Time-resolved pump–probe
spectroscopic ellipsometry of cubic GaN. I. Determination of the dielectric function.
Journal of Applied Physics, 134(7). https://doi.org/10.1063/5.0153091
bibtex: '@article{Baron_Goldhahn_Espinoza_Zahradník_Rebarz_Andreasson_Deppe_As_Feneberg_2023,
title={Time-resolved pump–probe spectroscopic ellipsometry of cubic GaN. I. Determination
of the dielectric function}, volume={134}, DOI={10.1063/5.0153091},
number={7}, journal={Journal of Applied Physics}, publisher={AIP Publishing},
author={Baron, Elias and Goldhahn, Rüdiger and Espinoza, Shirly and Zahradník,
Martin and Rebarz, Mateusz and Andreasson, Jakob and Deppe, Michael and As, Donat
Josef and Feneberg, Martin}, year={2023} }'
chicago: Baron, Elias, Rüdiger Goldhahn, Shirly Espinoza, Martin Zahradník, Mateusz
Rebarz, Jakob Andreasson, Michael Deppe, Donat Josef As, and Martin Feneberg.
“Time-Resolved Pump–Probe Spectroscopic Ellipsometry of Cubic GaN. I. Determination
of the Dielectric Function.” Journal of Applied Physics 134, no. 7 (2023).
https://doi.org/10.1063/5.0153091.
ieee: 'E. Baron et al., “Time-resolved pump–probe spectroscopic ellipsometry
of cubic GaN. I. Determination of the dielectric function,” Journal of Applied
Physics, vol. 134, no. 7, 2023, doi: 10.1063/5.0153091.'
mla: Baron, Elias, et al. “Time-Resolved Pump–Probe Spectroscopic Ellipsometry of
Cubic GaN. I. Determination of the Dielectric Function.” Journal of Applied
Physics, vol. 134, no. 7, AIP Publishing, 2023, doi:10.1063/5.0153091.
short: E. Baron, R. Goldhahn, S. Espinoza, M. Zahradník, M. Rebarz, J. Andreasson,
M. Deppe, D.J. As, M. Feneberg, Journal of Applied Physics 134 (2023).
date_created: 2023-08-18T08:17:41Z
date_updated: 2023-10-09T09:17:15Z
department:
- _id: '15'
- _id: '230'
doi: 10.1063/5.0153091
intvolume: ' 134'
issue: '7'
keyword:
- General Physics and Astronomy
language:
- iso: eng
publication: Journal of Applied Physics
publication_identifier:
issn:
- 0021-8979
- 1089-7550
publication_status: published
publisher: AIP Publishing
status: public
title: Time-resolved pump–probe spectroscopic ellipsometry of cubic GaN. I. Determination
of the dielectric function
type: journal_article
user_id: '14931'
volume: 134
year: '2023'
...
---
_id: '47997'
abstract:
- lang: eng
text: The crystal family of potassium titanyl phosphate (KTiOPO4) is a promising
material group for applications in quantum and nonlinear optics. The fabrication
of low-loss optical waveguides, as well as high-grade periodically poled ferroelectric
domain structures, requires a profound understanding of the material properties
and crystal structure. In this regard, Raman spectroscopy offers the possibility
to study and visualize domain structures, strain, defects, and the local stoichiometry,
which are all factors impacting device performance. However, the accurate interpretation
of Raman spectra and their changes with respect to extrinsic and intrinsic defects
requires a thorough assignment of the Raman modes to their respective crystal
features, which to date is only partly conducted based on phenomenological modelling.
To address this issue, we calculated the phonon spectra of potassium titanyl phosphate
and the related compounds rubidium titanyl phosphate (RbTiOPO4) and potassium
titanyl arsenate (KTiOAsO4) based on density functional theory and compared them
with experimental data. Overall, this allows us to assign various spectral features
to eigenmodes of lattice substructures with improved detail compared to previous
assignments. Nevertheless, the analysis also shows that not all features of the
spectra can unambigiously be explained yet. A possible explanation might be that
defects or long range fields not included in the modeling play a crucial rule
for the resulting Raman spectrum. In conclusion, this work provides an improved
foundation into the vibrational properties in the KTiOPO4 material family.
article_number: '1423'
author:
- first_name: Sergej
full_name: Neufeld, Sergej
last_name: Neufeld
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Laura
full_name: Padberg, Laura
id: '40300'
last_name: Padberg
- first_name: Christof
full_name: Eigner, Christof
id: '13244'
last_name: Eigner
orcid: https://orcid.org/0000-0002-5693-3083
- first_name: Gerhard
full_name: Berth, Gerhard
id: '53'
last_name: Berth
- first_name: Christine
full_name: Silberhorn, Christine
id: '26263'
last_name: Silberhorn
- first_name: Lukas M.
full_name: Eng, Lukas M.
last_name: Eng
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Michael
full_name: Rüsing, Michael
id: '22501'
last_name: Rüsing
orcid: 0000-0003-4682-4577
citation:
ama: Neufeld S, Gerstmann U, Padberg L, et al. Vibrational Properties of the Potassium
Titanyl Phosphate Crystal Family. Crystals. 2023;13(10). doi:10.3390/cryst13101423
apa: Neufeld, S., Gerstmann, U., Padberg, L., Eigner, C., Berth, G., Silberhorn,
C., Eng, L. M., Schmidt, W. G., & Rüsing, M. (2023). Vibrational Properties
of the Potassium Titanyl Phosphate Crystal Family. Crystals, 13(10),
Article 1423. https://doi.org/10.3390/cryst13101423
bibtex: '@article{Neufeld_Gerstmann_Padberg_Eigner_Berth_Silberhorn_Eng_Schmidt_Rüsing_2023,
title={Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family},
volume={13}, DOI={10.3390/cryst13101423},
number={101423}, journal={Crystals}, publisher={MDPI AG}, author={Neufeld, Sergej
and Gerstmann, Uwe and Padberg, Laura and Eigner, Christof and Berth, Gerhard
and Silberhorn, Christine and Eng, Lukas M. and Schmidt, Wolf Gero and Rüsing,
Michael}, year={2023} }'
chicago: Neufeld, Sergej, Uwe Gerstmann, Laura Padberg, Christof Eigner, Gerhard
Berth, Christine Silberhorn, Lukas M. Eng, Wolf Gero Schmidt, and Michael Rüsing.
“Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family.” Crystals
13, no. 10 (2023). https://doi.org/10.3390/cryst13101423.
ieee: 'S. Neufeld et al., “Vibrational Properties of the Potassium Titanyl
Phosphate Crystal Family,” Crystals, vol. 13, no. 10, Art. no. 1423, 2023,
doi: 10.3390/cryst13101423.'
mla: Neufeld, Sergej, et al. “Vibrational Properties of the Potassium Titanyl Phosphate
Crystal Family.” Crystals, vol. 13, no. 10, 1423, MDPI AG, 2023, doi:10.3390/cryst13101423.
short: S. Neufeld, U. Gerstmann, L. Padberg, C. Eigner, G. Berth, C. Silberhorn,
L.M. Eng, W.G. Schmidt, M. Rüsing, Crystals 13 (2023).
date_created: 2023-10-11T09:10:53Z
date_updated: 2023-10-11T09:15:58Z
department:
- _id: '169'
doi: 10.3390/cryst13101423
funded_apc: '1'
intvolume: ' 13'
issue: '10'
keyword:
- Inorganic Chemistry
- Condensed Matter Physics
- General Materials Science
- General Chemical Engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3390/cryst13101423
oa: '1'
project:
- _id: '168'
grant_number: '231447078'
name: 'TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften
von Lithiumniobat (B07*)'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '266'
grant_number: PROFILNRW-2020-067
name: 'PhoQC: PhoQC: Photonisches Quantencomputing'
publication: Crystals
publication_identifier:
issn:
- 2073-4352
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family
type: journal_article
user_id: '22501'
volume: 13
year: '2023'
...
---
_id: '48349'
abstract:
- lang: eng
text: We report a titanium indiffused waveguide resonator featuring an integrated
electro-optic modulator for cavity length stabilisation that produces close to
5 dB of squeezed light at 1550 nm (2.4 dB directly measured). The resonator is
locked on resonance for tens of minutes with 70 mW of SH light incident on the
cavity, demonstrating that photorefraction can be mitigated. Squeezed light production
concurrent with cavity length stabilisation utilising the integrated EOM is demonstrated.
The device demonstrates the suitability of this platform for squeezed light generation
in network applications, where stabilisation to the reference field is typically
necessary.
article_number: '34903'
author:
- first_name: M.
full_name: Stefszky, M.
last_name: Stefszky
- first_name: F.
full_name: vom Bruch, F.
last_name: vom Bruch
- first_name: M.
full_name: Santandrea, M.
last_name: Santandrea
- first_name: R.
full_name: Ricken, R.
last_name: Ricken
- first_name: V.
full_name: Quiring, V.
last_name: Quiring
- first_name: C.
full_name: Eigner, C.
last_name: Eigner
- first_name: H
full_name: Herrmann, H
last_name: Herrmann
- first_name: C
full_name: Silberhorn, C
last_name: Silberhorn
citation:
ama: Stefszky M, vom Bruch F, Santandrea M, et al. Lithium niobate waveguide squeezer
with integrated cavity length stabilisation for network applications. Optics
Express. 2023;31(21). doi:10.1364/oe.498423
apa: Stefszky, M., vom Bruch, F., Santandrea, M., Ricken, R., Quiring, V., Eigner,
C., Herrmann, H., & Silberhorn, C. (2023). Lithium niobate waveguide squeezer
with integrated cavity length stabilisation for network applications. Optics
Express, 31(21), Article 34903. https://doi.org/10.1364/oe.498423
bibtex: '@article{Stefszky_vom Bruch_Santandrea_Ricken_Quiring_Eigner_Herrmann_Silberhorn_2023,
title={Lithium niobate waveguide squeezer with integrated cavity length stabilisation
for network applications}, volume={31}, DOI={10.1364/oe.498423},
number={2134903}, journal={Optics Express}, publisher={Optica Publishing Group},
author={Stefszky, M. and vom Bruch, F. and Santandrea, M. and Ricken, R. and Quiring,
V. and Eigner, C. and Herrmann, H and Silberhorn, C}, year={2023} }'
chicago: Stefszky, M., F. vom Bruch, M. Santandrea, R. Ricken, V. Quiring, C. Eigner,
H Herrmann, and C Silberhorn. “Lithium Niobate Waveguide Squeezer with Integrated
Cavity Length Stabilisation for Network Applications.” Optics Express 31,
no. 21 (2023). https://doi.org/10.1364/oe.498423.
ieee: 'M. Stefszky et al., “Lithium niobate waveguide squeezer with integrated
cavity length stabilisation for network applications,” Optics Express,
vol. 31, no. 21, Art. no. 34903, 2023, doi: 10.1364/oe.498423.'
mla: Stefszky, M., et al. “Lithium Niobate Waveguide Squeezer with Integrated Cavity
Length Stabilisation for Network Applications.” Optics Express, vol. 31,
no. 21, 34903, Optica Publishing Group, 2023, doi:10.1364/oe.498423.
short: M. Stefszky, F. vom Bruch, M. Santandrea, R. Ricken, V. Quiring, C. Eigner,
H. Herrmann, C. Silberhorn, Optics Express 31 (2023).
date_created: 2023-10-19T14:22:59Z
date_updated: 2023-11-02T09:26:42Z
department:
- _id: '288'
- _id: '623'
doi: 10.1364/oe.498423
intvolume: ' 31'
issue: '21'
keyword:
- Atomic and Molecular Physics
- and Optics
language:
- iso: eng
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: Optica Publishing Group
status: public
title: Lithium niobate waveguide squeezer with integrated cavity length stabilisation
for network applications
type: journal_article
user_id: '42777'
volume: 31
year: '2023'
...