---
_id: '62801'
abstract:
- lang: eng
text: The three-dimensional (3D) distribution of individual atoms on the surface
of catalyst nanoparticles plays a vital role in their activity and stability.
Optimising the performance of electrocatalysts requires atomic-scale information,
but it is difficult to obtain. Here, we use atom probe tomography to elucidate
the 3D structure of 10 nm sized Co2FeO4 and CoFe2O4 nanoparticles during oxygen
evolution reaction (OER). We reveal nanoscale spinodal decomposition in pristine
Co2FeO4. The interfaces of Co-rich and Fe-rich nanodomains of Co2FeO4 become trapping
sites for hydroxyl groups, contributing to a higher OER activity compared to that
of CoFe2O4. However, the activity of Co2FeO4 drops considerably due to concurrent
irreversible transformation towards CoIVO2 and pronounced Fe dissolution. In contrast,
there is negligible elemental redistribution for CoFe2O4 after OER, except for
surface structural transformation towards (FeIII, CoIII)2O3. Overall, our study
provides a unique 3D compositional distribution of mixed Co-Fe spinel oxides,
which gives atomic-scale insights into active sites and the deactivation of electrocatalysts
during OER.
article_number: '179'
article_type: original
author:
- first_name: Weikai
full_name: Xiang, Weikai
last_name: Xiang
- first_name: Nating
full_name: Yang, Nating
last_name: Yang
- first_name: Xiaopeng
full_name: Li, Xiaopeng
last_name: Li
- first_name: Julia
full_name: Linnemann, Julia
id: '116779'
last_name: Linnemann
orcid: 0000-0001-6883-5424
- first_name: Ulrich
full_name: Hagemann, Ulrich
last_name: Hagemann
- first_name: Olaf
full_name: Ruediger, Olaf
last_name: Ruediger
- first_name: Markus
full_name: Heidelmann, Markus
last_name: Heidelmann
- first_name: Tobias
full_name: Falk, Tobias
last_name: Falk
- first_name: Matteo
full_name: Aramini, Matteo
last_name: Aramini
- first_name: Serena
full_name: DeBeer, Serena
last_name: DeBeer
- first_name: Martin
full_name: Muhler, Martin
last_name: Muhler
- first_name: Kristina
full_name: Tschulik, Kristina
last_name: Tschulik
- first_name: Tong
full_name: Li, Tong
last_name: Li
citation:
ama: Xiang W, Yang N, Li X, et al. 3D atomic-scale imaging of mixed Co-Fe spinel
oxide nanoparticles during oxygen evolution reaction. Nature Communications.
2022;13(1). doi:10.1038/s41467-021-27788-2
apa: Xiang, W., Yang, N., Li, X., Linnemann, J., Hagemann, U., Ruediger, O., Heidelmann,
M., Falk, T., Aramini, M., DeBeer, S., Muhler, M., Tschulik, K., & Li, T.
(2022). 3D atomic-scale imaging of mixed Co-Fe spinel oxide nanoparticles during
oxygen evolution reaction. Nature Communications, 13(1), Article
179. https://doi.org/10.1038/s41467-021-27788-2
bibtex: '@article{Xiang_Yang_Li_Linnemann_Hagemann_Ruediger_Heidelmann_Falk_Aramini_DeBeer_et
al._2022, title={3D atomic-scale imaging of mixed Co-Fe spinel oxide nanoparticles
during oxygen evolution reaction}, volume={13}, DOI={10.1038/s41467-021-27788-2},
number={1179}, journal={Nature Communications}, publisher={Springer Science and
Business Media LLC}, author={Xiang, Weikai and Yang, Nating and Li, Xiaopeng and
Linnemann, Julia and Hagemann, Ulrich and Ruediger, Olaf and Heidelmann, Markus
and Falk, Tobias and Aramini, Matteo and DeBeer, Serena and et al.}, year={2022}
}'
chicago: Xiang, Weikai, Nating Yang, Xiaopeng Li, Julia Linnemann, Ulrich Hagemann,
Olaf Ruediger, Markus Heidelmann, et al. “3D Atomic-Scale Imaging of Mixed Co-Fe
Spinel Oxide Nanoparticles during Oxygen Evolution Reaction.” Nature Communications
13, no. 1 (2022). https://doi.org/10.1038/s41467-021-27788-2.
ieee: 'W. Xiang et al., “3D atomic-scale imaging of mixed Co-Fe spinel oxide
nanoparticles during oxygen evolution reaction,” Nature Communications,
vol. 13, no. 1, Art. no. 179, 2022, doi: 10.1038/s41467-021-27788-2.'
mla: Xiang, Weikai, et al. “3D Atomic-Scale Imaging of Mixed Co-Fe Spinel Oxide
Nanoparticles during Oxygen Evolution Reaction.” Nature Communications,
vol. 13, no. 1, 179, Springer Science and Business Media LLC, 2022, doi:10.1038/s41467-021-27788-2.
short: W. Xiang, N. Yang, X. Li, J. Linnemann, U. Hagemann, O. Ruediger, M. Heidelmann,
T. Falk, M. Aramini, S. DeBeer, M. Muhler, K. Tschulik, T. Li, Nature Communications
13 (2022).
date_created: 2025-12-03T15:22:16Z
date_updated: 2025-12-03T16:30:12Z
department:
- _id: '985'
doi: 10.1038/s41467-021-27788-2
extern: '1'
intvolume: ' 13'
issue: '1'
keyword:
- electrocatalysis
- oxygen evolution reaction
- cobalt spinel
- electrochemical impedance spectroscopy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.nature.com/articles/s41467-021-27788-2
oa: '1'
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: 3D atomic-scale imaging of mixed Co-Fe spinel oxide nanoparticles during oxygen
evolution reaction
type: journal_article
user_id: '116779'
volume: 13
year: '2022'
...
---
_id: '62813'
abstract:
- lang: eng
text: Nanostructured manganese oxides have a rich variety of morphologies and crystal
phases which can undergo transformations during synthesis and application. Although
these structural features are crucial for their performance, the mechanisms behind
such transitions are not well understood. Herein, we describe the mechanism of
transformation from layered 2D δ-MnO2 nanosheets to the scarcely reported γ-MnO2
nanocone morphology. Despite the common purpose of introducing Fe dopants to enhance
the conductivity of layered manganese oxides, the Fe galvanic exchange reaction
was found responsible for such coupled phase/morphology transition. Electrochemical
characterization confirmed a distinct electrochemical behaviour of the nanocones,
emphasizing the need to unravel the mechanism of 2D MnO2 transformation. Such
mechanistic insights were gained by systematic and rigorous electron microscopy
studies. The effect of the local chemical composition was determined by energy
dispersive X-ray spectroscopy while electron energy loss spectroscopy unravelled
the key influence of the oxidation state of Mn ions within nanosheets and nanocones.
We propose and demonstrate a Mn2+-mediated oxidative mechanism of coupled morphology/phase
transformation subjected to the equilibrium of Fe and Mn ions during galvanic
exchange reaction. These findings contribute to the understanding of the growth
and morphology/phase transformations of manganese oxide nanostructures, providing
insights for the rational design of nanomaterials.
article_type: original
author:
- first_name: Raquel
full_name: Aymerich-Armengol, Raquel
last_name: Aymerich-Armengol
- first_name: Paolo
full_name: Cignoni, Paolo
last_name: Cignoni
- first_name: Petra
full_name: Ebbinghaus, Petra
last_name: Ebbinghaus
- first_name: Julia
full_name: Linnemann, Julia
id: '116779'
last_name: Linnemann
orcid: 0000-0001-6883-5424
- first_name: Martin
full_name: Rabe, Martin
last_name: Rabe
- first_name: Kristina
full_name: Tschulik, Kristina
last_name: Tschulik
- first_name: Christina
full_name: Scheu, Christina
last_name: Scheu
- first_name: Joohyun
full_name: Lim, Joohyun
last_name: Lim
citation:
ama: Aymerich-Armengol R, Cignoni P, Ebbinghaus P, et al. Mechanism of coupled phase/morphology
transformation of 2D manganese oxides through Fe galvanic exchange reaction. Journal
of Materials Chemistry A. 2022;10(45):24190-24198. doi:10.1039/d2ta06552e
apa: Aymerich-Armengol, R., Cignoni, P., Ebbinghaus, P., Linnemann, J., Rabe, M.,
Tschulik, K., Scheu, C., & Lim, J. (2022). Mechanism of coupled phase/morphology
transformation of 2D manganese oxides through Fe galvanic exchange reaction. Journal
of Materials Chemistry A, 10(45), 24190–24198. https://doi.org/10.1039/d2ta06552e
bibtex: '@article{Aymerich-Armengol_Cignoni_Ebbinghaus_Linnemann_Rabe_Tschulik_Scheu_Lim_2022,
title={Mechanism of coupled phase/morphology transformation of 2D manganese oxides
through Fe galvanic exchange reaction}, volume={10}, DOI={10.1039/d2ta06552e},
number={45}, journal={Journal of Materials Chemistry A}, publisher={Royal Society
of Chemistry (RSC)}, author={Aymerich-Armengol, Raquel and Cignoni, Paolo and
Ebbinghaus, Petra and Linnemann, Julia and Rabe, Martin and Tschulik, Kristina
and Scheu, Christina and Lim, Joohyun}, year={2022}, pages={24190–24198} }'
chicago: 'Aymerich-Armengol, Raquel, Paolo Cignoni, Petra Ebbinghaus, Julia Linnemann,
Martin Rabe, Kristina Tschulik, Christina Scheu, and Joohyun Lim. “Mechanism of
Coupled Phase/Morphology Transformation of 2D Manganese Oxides through Fe Galvanic
Exchange Reaction.” Journal of Materials Chemistry A 10, no. 45 (2022):
24190–98. https://doi.org/10.1039/d2ta06552e.'
ieee: 'R. Aymerich-Armengol et al., “Mechanism of coupled phase/morphology
transformation of 2D manganese oxides through Fe galvanic exchange reaction,”
Journal of Materials Chemistry A, vol. 10, no. 45, pp. 24190–24198, 2022,
doi: 10.1039/d2ta06552e.'
mla: Aymerich-Armengol, Raquel, et al. “Mechanism of Coupled Phase/Morphology Transformation
of 2D Manganese Oxides through Fe Galvanic Exchange Reaction.” Journal of Materials
Chemistry A, vol. 10, no. 45, Royal Society of Chemistry (RSC), 2022, pp.
24190–98, doi:10.1039/d2ta06552e.
short: R. Aymerich-Armengol, P. Cignoni, P. Ebbinghaus, J. Linnemann, M. Rabe, K.
Tschulik, C. Scheu, J. Lim, Journal of Materials Chemistry A 10 (2022) 24190–24198.
date_created: 2025-12-03T16:02:15Z
date_updated: 2025-12-03T16:30:43Z
department:
- _id: '985'
doi: 10.1039/d2ta06552e
extern: '1'
intvolume: ' 10'
issue: '45'
keyword:
- manganese oxide
- nanomaterials
- TEM
- supercapacitors
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
page: 24190-24198
publication: Journal of Materials Chemistry A
publication_identifier:
issn:
- 2050-7488
- 2050-7496
publication_status: published
publisher: Royal Society of Chemistry (RSC)
quality_controlled: '1'
status: public
title: Mechanism of coupled phase/morphology transformation of 2D manganese oxides
through Fe galvanic exchange reaction
type: journal_article
user_id: '116779'
volume: 10
year: '2022'
...
---
_id: '30511'
abstract:
- lang: eng
text: AbstractMany critical codebases are written
in C, and most of them use preprocessor directives to encode variability, effectively
encoding software product lines. These preprocessor directives, however, challenge
any static code analysis. SPLlift, a previously presented approach for analyzing
software product lines, is limited to Java programs that use a rather simple feature
encoding and to analysis problems with a finite and ideally small domain. Other
approaches that allow the analysis of real-world C software product lines use
special-purpose analyses, preventing the reuse of existing analysis infrastructures
and ignoring the progress made by the static analysis community. This work presents
VarAlyzer, a novel static analysis approach for software product
lines. VarAlyzer first transforms preprocessor constructs to
plain C while preserving their variability and semantics. It then solves any given
distributive analysis problem on transformed product lines in a variability-aware
manner. VarAlyzer ’s analysis results are annotated with feature
constraints that encode in which configurations each result holds. Our experiments
with 95 compilation units of OpenSSL show that applying VarAlyzer
enables one to conduct inter-procedural, flow-, field- and context-sensitive data-flow
analyses on entire product lines for the first time, outperforming the product-based
approach for highly-configurable systems.
alternative_title:
- Revoking the preprocessor’s special role
article_number: '35'
article_type: original
author:
- first_name: Philipp
full_name: Schubert, Philipp
id: '60543'
last_name: Schubert
orcid: 0000-0002-8674-1859
- first_name: Paul
full_name: Gazzillo, Paul
last_name: Gazzillo
- first_name: Zach
full_name: Patterson, Zach
last_name: Patterson
- first_name: Julian
full_name: Braha, Julian
last_name: Braha
- first_name: Fabian Benedikt
full_name: Schiebel, Fabian Benedikt
id: '55745'
last_name: Schiebel
orcid: 0009-0008-6867-9802
- first_name: Ben
full_name: Hermann, Ben
id: '66173'
last_name: Hermann
orcid: 0000-0001-9848-2017
- first_name: Shiyi
full_name: Wei, Shiyi
last_name: Wei
- first_name: Eric
full_name: Bodden, Eric
id: '59256'
last_name: Bodden
orcid: 0000-0003-3470-3647
citation:
ama: Schubert P, Gazzillo P, Patterson Z, et al. Static data-flow analysis for software
product lines in C. Automated Software Engineering. 2022;29(1). doi:10.1007/s10515-022-00333-1
apa: Schubert, P., Gazzillo, P., Patterson, Z., Braha, J., Schiebel, F. B., Hermann,
B., Wei, S., & Bodden, E. (2022). Static data-flow analysis for software product
lines in C. Automated Software Engineering, 29(1), Article 35. https://doi.org/10.1007/s10515-022-00333-1
bibtex: '@article{Schubert_Gazzillo_Patterson_Braha_Schiebel_Hermann_Wei_Bodden_2022,
title={Static data-flow analysis for software product lines in C}, volume={29},
DOI={10.1007/s10515-022-00333-1},
number={135}, journal={Automated Software Engineering}, publisher={Springer Science
and Business Media LLC}, author={Schubert, Philipp and Gazzillo, Paul and Patterson,
Zach and Braha, Julian and Schiebel, Fabian Benedikt and Hermann, Ben and Wei,
Shiyi and Bodden, Eric}, year={2022} }'
chicago: Schubert, Philipp, Paul Gazzillo, Zach Patterson, Julian Braha, Fabian
Benedikt Schiebel, Ben Hermann, Shiyi Wei, and Eric Bodden. “Static Data-Flow
Analysis for Software Product Lines in C.” Automated Software Engineering
29, no. 1 (2022). https://doi.org/10.1007/s10515-022-00333-1.
ieee: 'P. Schubert et al., “Static data-flow analysis for software product
lines in C,” Automated Software Engineering, vol. 29, no. 1, Art. no. 35,
2022, doi: 10.1007/s10515-022-00333-1.'
mla: Schubert, Philipp, et al. “Static Data-Flow Analysis for Software Product Lines
in C.” Automated Software Engineering, vol. 29, no. 1, 35, Springer Science
and Business Media LLC, 2022, doi:10.1007/s10515-022-00333-1.
short: P. Schubert, P. Gazzillo, Z. Patterson, J. Braha, F.B. Schiebel, B. Hermann,
S. Wei, E. Bodden, Automated Software Engineering 29 (2022).
date_created: 2022-03-25T07:41:26Z
date_updated: 2025-12-04T10:42:38Z
department:
- _id: '76'
doi: 10.1007/s10515-022-00333-1
intvolume: ' 29'
issue: '1'
keyword:
- inter-procedural static analysis
- software product lines
- preprocessor
- LLVM
- C/C++
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.springer.com/article/10.1007/s10515-022-00333-1
oa: '1'
project:
- _id: '12'
name: 'SFB 901 - B4: SFB 901 - Subproject B4'
- _id: '3'
name: 'SFB 901 - B: SFB 901 - Project Area B'
- _id: '1'
name: 'SFB 901: SFB 901'
publication: Automated Software Engineering
publication_identifier:
issn:
- 0928-8910
- 1573-7535
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Static data-flow analysis for software product lines in C
type: journal_article
user_id: '15249'
volume: 29
year: '2022'
...
---
_id: '62847'
author:
- first_name: Claudia
full_name: Kirschtein, Claudia
id: '28261'
last_name: Kirschtein
citation:
ama: 'Kirschtein C. Die Rolle von Emotionen beim Wissenstransfer. Mediendidaktische
Überlegungen zur Gestaltung von Online-Lehrangeboten in der Erwachsenenbildung.
In: Harmening A-L, Leinfellner S, Meier R, eds. Wissenstransfer. Aufgabe,
Herausforderung und Chance kulturwissenschaftlicher Forschung. wbg; 2022:149-172.'
apa: Kirschtein, C. (2022). Die Rolle von Emotionen beim Wissenstransfer. Mediendidaktische
Überlegungen zur Gestaltung von Online-Lehrangeboten in der Erwachsenenbildung.
In A.-L. Harmening , S. Leinfellner, & R. Meier (Eds.), Wissenstransfer.
Aufgabe, Herausforderung und Chance kulturwissenschaftlicher Forschung (pp.
149–172). wbg.
bibtex: '@inbook{Kirschtein_2022, place={Darmstadt}, title={Die Rolle von Emotionen
beim Wissenstransfer. Mediendidaktische Überlegungen zur Gestaltung von Online-Lehrangeboten
in der Erwachsenenbildung}, booktitle={Wissenstransfer. Aufgabe, Herausforderung
und Chance kulturwissenschaftlicher Forschung}, publisher={wbg}, author={Kirschtein,
Claudia}, editor={Harmening , Anda-Lisa and Leinfellner, Stefanie and Meier, Rebecca},
year={2022}, pages={149–172} }'
chicago: 'Kirschtein, Claudia. “Die Rolle von Emotionen beim Wissenstransfer. Mediendidaktische
Überlegungen zur Gestaltung von Online-Lehrangeboten in der Erwachsenenbildung.”
In Wissenstransfer. Aufgabe, Herausforderung und Chance kulturwissenschaftlicher
Forschung, edited by Anda-Lisa Harmening , Stefanie Leinfellner, and Rebecca
Meier, 149–72. Darmstadt: wbg, 2022.'
ieee: 'C. Kirschtein, “Die Rolle von Emotionen beim Wissenstransfer. Mediendidaktische
Überlegungen zur Gestaltung von Online-Lehrangeboten in der Erwachsenenbildung,”
in Wissenstransfer. Aufgabe, Herausforderung und Chance kulturwissenschaftlicher
Forschung, A.-L. Harmening , S. Leinfellner, and R. Meier, Eds. Darmstadt:
wbg, 2022, pp. 149–172.'
mla: Kirschtein, Claudia. “Die Rolle von Emotionen beim Wissenstransfer. Mediendidaktische
Überlegungen zur Gestaltung von Online-Lehrangeboten in der Erwachsenenbildung.”
Wissenstransfer. Aufgabe, Herausforderung und Chance kulturwissenschaftlicher
Forschung, edited by Anda-Lisa Harmening et al., wbg, 2022, pp. 149–72.
short: 'C. Kirschtein, in: A.-L. Harmening , S. Leinfellner, R. Meier (Eds.), Wissenstransfer.
Aufgabe, Herausforderung und Chance kulturwissenschaftlicher Forschung, wbg, Darmstadt,
2022, pp. 149–172.'
date_created: 2025-12-04T11:58:12Z
date_updated: 2025-12-04T11:58:49Z
editor:
- first_name: Anda-Lisa
full_name: Harmening , Anda-Lisa
last_name: 'Harmening '
- first_name: Stefanie
full_name: Leinfellner, Stefanie
last_name: Leinfellner
- first_name: Rebecca
full_name: Meier, Rebecca
last_name: Meier
language:
- iso: ger
page: 149-172
place: Darmstadt
publication: Wissenstransfer. Aufgabe, Herausforderung und Chance kulturwissenschaftlicher
Forschung
publication_identifier:
isbn:
- 978-3-534-27585-4
publication_status: published
publisher: wbg
status: public
title: Die Rolle von Emotionen beim Wissenstransfer. Mediendidaktische Überlegungen
zur Gestaltung von Online-Lehrangeboten in der Erwachsenenbildung
type: book_chapter
user_id: '28261'
year: '2022'
...
---
_id: '34094'
article_number: '201103'
author:
- first_name: Ying
full_name: Gao, Ying
last_name: Gao
- first_name: Yao
full_name: Li, Yao
last_name: Li
- first_name: Xuekai
full_name: Ma, Xuekai
id: '59416'
last_name: Ma
- first_name: Meini
full_name: Gao, Meini
last_name: Gao
- first_name: Haitao
full_name: Dai, Haitao
last_name: Dai
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: Tingge
full_name: Gao, Tingge
last_name: Gao
citation:
ama: Gao Y, Li Y, Ma X, et al. Tilting nondispersive bands in an empty microcavity.
Applied Physics Letters. 2022;121(20). doi:10.1063/5.0093908
apa: Gao, Y., Li, Y., Ma, X., Gao, M., Dai, H., Schumacher, S., & Gao, T. (2022).
Tilting nondispersive bands in an empty microcavity. Applied Physics Letters,
121(20), Article 201103. https://doi.org/10.1063/5.0093908
bibtex: '@article{Gao_Li_Ma_Gao_Dai_Schumacher_Gao_2022, title={Tilting nondispersive
bands in an empty microcavity}, volume={121}, DOI={10.1063/5.0093908},
number={20201103}, journal={Applied Physics Letters}, publisher={AIP Publishing},
author={Gao, Ying and Li, Yao and Ma, Xuekai and Gao, Meini and Dai, Haitao and
Schumacher, Stefan and Gao, Tingge}, year={2022} }'
chicago: Gao, Ying, Yao Li, Xuekai Ma, Meini Gao, Haitao Dai, Stefan Schumacher,
and Tingge Gao. “Tilting Nondispersive Bands in an Empty Microcavity.” Applied
Physics Letters 121, no. 20 (2022). https://doi.org/10.1063/5.0093908.
ieee: 'Y. Gao et al., “Tilting nondispersive bands in an empty microcavity,”
Applied Physics Letters, vol. 121, no. 20, Art. no. 201103, 2022, doi:
10.1063/5.0093908.'
mla: Gao, Ying, et al. “Tilting Nondispersive Bands in an Empty Microcavity.” Applied
Physics Letters, vol. 121, no. 20, 201103, AIP Publishing, 2022, doi:10.1063/5.0093908.
short: Y. Gao, Y. Li, X. Ma, M. Gao, H. Dai, S. Schumacher, T. Gao, Applied Physics
Letters 121 (2022).
date_created: 2022-11-16T12:29:11Z
date_updated: 2025-12-05T13:50:49Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '230'
- _id: '429'
- _id: '35'
doi: 10.1063/5.0093908
intvolume: ' 121'
issue: '20'
keyword:
- Physics and Astronomy (miscellaneous)
language:
- iso: eng
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '61'
name: 'TRR 142 - A4: TRR 142 - Subproject A4'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: Applied Physics Letters
publication_identifier:
issn:
- 0003-6951
- 1077-3118
publication_status: published
publisher: AIP Publishing
status: public
title: Tilting nondispersive bands in an empty microcavity
type: journal_article
user_id: '16199'
volume: 121
year: '2022'
...
---
_id: '31937'
author:
- first_name: Yao
full_name: Li, Yao
last_name: Li
- first_name: Xuekai
full_name: Ma, Xuekai
id: '59416'
last_name: Ma
- first_name: Zaharias
full_name: Hatzopoulos, Zaharias
last_name: Hatzopoulos
- first_name: Pavlos G.
full_name: Savvidis, Pavlos G.
last_name: Savvidis
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: Tingge
full_name: Gao, Tingge
last_name: Gao
citation:
ama: Li Y, Ma X, Hatzopoulos Z, Savvidis PG, Schumacher S, Gao T. Switching Off
a Microcavity Polariton Condensate near the Exceptional Point. ACS Photonics.
2022;9(6):2079-2086. doi:10.1021/acsphotonics.2c00288
apa: Li, Y., Ma, X., Hatzopoulos, Z., Savvidis, P. G., Schumacher, S., & Gao,
T. (2022). Switching Off a Microcavity Polariton Condensate near the Exceptional
Point. ACS Photonics, 9(6), 2079–2086. https://doi.org/10.1021/acsphotonics.2c00288
bibtex: '@article{Li_Ma_Hatzopoulos_Savvidis_Schumacher_Gao_2022, title={Switching
Off a Microcavity Polariton Condensate near the Exceptional Point}, volume={9},
DOI={10.1021/acsphotonics.2c00288},
number={6}, journal={ACS Photonics}, publisher={American Chemical Society (ACS)},
author={Li, Yao and Ma, Xuekai and Hatzopoulos, Zaharias and Savvidis, Pavlos
G. and Schumacher, Stefan and Gao, Tingge}, year={2022}, pages={2079–2086} }'
chicago: 'Li, Yao, Xuekai Ma, Zaharias Hatzopoulos, Pavlos G. Savvidis, Stefan Schumacher,
and Tingge Gao. “Switching Off a Microcavity Polariton Condensate near the Exceptional
Point.” ACS Photonics 9, no. 6 (2022): 2079–86. https://doi.org/10.1021/acsphotonics.2c00288.'
ieee: 'Y. Li, X. Ma, Z. Hatzopoulos, P. G. Savvidis, S. Schumacher, and T. Gao,
“Switching Off a Microcavity Polariton Condensate near the Exceptional Point,”
ACS Photonics, vol. 9, no. 6, pp. 2079–2086, 2022, doi: 10.1021/acsphotonics.2c00288.'
mla: Li, Yao, et al. “Switching Off a Microcavity Polariton Condensate near the
Exceptional Point.” ACS Photonics, vol. 9, no. 6, American Chemical Society
(ACS), 2022, pp. 2079–86, doi:10.1021/acsphotonics.2c00288.
short: Y. Li, X. Ma, Z. Hatzopoulos, P.G. Savvidis, S. Schumacher, T. Gao, ACS Photonics
9 (2022) 2079–2086.
date_created: 2022-06-19T19:26:12Z
date_updated: 2025-12-05T13:51:31Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '230'
- _id: '429'
- _id: '35'
doi: 10.1021/acsphotonics.2c00288
intvolume: ' 9'
issue: '6'
language:
- iso: eng
page: 2079-2086
project:
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '61'
name: 'TRR 142 - A4: TRR 142 - Subproject A4'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: ACS Photonics
publication_identifier:
issn:
- 2330-4022
- 2330-4022
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Switching Off a Microcavity Polariton Condensate near the Exceptional Point
type: journal_article
user_id: '16199'
volume: 9
year: '2022'
...
---
_id: '37713'
author:
- first_name: Fadis F.
full_name: Murzakhanov, Fadis F.
last_name: Murzakhanov
- first_name: Georgy Vladimirovich
full_name: Mamin, Georgy Vladimirovich
last_name: Mamin
- first_name: Sergei Borisovich
full_name: Orlinskii, Sergei Borisovich
last_name: Orlinskii
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Timur
full_name: Biktagirov, Timur
id: '65612'
last_name: Biktagirov
- first_name: Igor
full_name: Aharonovich, Igor
last_name: Aharonovich
- first_name: Andreas
full_name: Gottscholl, Andreas
last_name: Gottscholl
- first_name: Andreas
full_name: Sperlich, Andreas
last_name: Sperlich
- first_name: Vladimir
full_name: Dyakonov, Vladimir
last_name: Dyakonov
- first_name: Victor A.
full_name: Soltamov, Victor A.
last_name: Soltamov
citation:
ama: Murzakhanov FF, Mamin GV, Orlinskii SB, et al. Electron–Nuclear Coherent Coupling
and Nuclear Spin Readout through Optically Polarized VB–
Spin States in hBN. Nano Letters. 2022;22(7):2718-2724. doi:10.1021/acs.nanolett.1c04610
apa: Murzakhanov, F. F., Mamin, G. V., Orlinskii, S. B., Gerstmann, U., Schmidt,
W. G., Biktagirov, T., Aharonovich, I., Gottscholl, A., Sperlich, A., Dyakonov,
V., & Soltamov, V. A. (2022). Electron–Nuclear Coherent Coupling and Nuclear
Spin Readout through Optically Polarized VB– Spin States
in hBN. Nano Letters, 22(7), 2718–2724. https://doi.org/10.1021/acs.nanolett.1c04610
bibtex: '@article{Murzakhanov_Mamin_Orlinskii_Gerstmann_Schmidt_Biktagirov_Aharonovich_Gottscholl_Sperlich_Dyakonov_et
al._2022, title={Electron–Nuclear Coherent Coupling and Nuclear Spin Readout through
Optically Polarized VB– Spin States in hBN}, volume={22},
DOI={10.1021/acs.nanolett.1c04610},
number={7}, journal={Nano Letters}, publisher={American Chemical Society (ACS)},
author={Murzakhanov, Fadis F. and Mamin, Georgy Vladimirovich and Orlinskii, Sergei
Borisovich and Gerstmann, Uwe and Schmidt, Wolf Gero and Biktagirov, Timur and
Aharonovich, Igor and Gottscholl, Andreas and Sperlich, Andreas and Dyakonov,
Vladimir and et al.}, year={2022}, pages={2718–2724} }'
chicago: 'Murzakhanov, Fadis F., Georgy Vladimirovich Mamin, Sergei Borisovich Orlinskii,
Uwe Gerstmann, Wolf Gero Schmidt, Timur Biktagirov, Igor Aharonovich, et al. “Electron–Nuclear
Coherent Coupling and Nuclear Spin Readout through Optically Polarized VB–
Spin States in HBN.” Nano Letters 22, no. 7 (2022): 2718–24. https://doi.org/10.1021/acs.nanolett.1c04610.'
ieee: 'F. F. Murzakhanov et al., “Electron–Nuclear Coherent Coupling and
Nuclear Spin Readout through Optically Polarized VB– Spin
States in hBN,” Nano Letters, vol. 22, no. 7, pp. 2718–2724, 2022, doi:
10.1021/acs.nanolett.1c04610.'
mla: Murzakhanov, Fadis F., et al. “Electron–Nuclear Coherent Coupling and Nuclear
Spin Readout through Optically Polarized VB– Spin States
in HBN.” Nano Letters, vol. 22, no. 7, American Chemical Society (ACS),
2022, pp. 2718–24, doi:10.1021/acs.nanolett.1c04610.
short: F.F. Murzakhanov, G.V. Mamin, S.B. Orlinskii, U. Gerstmann, W.G. Schmidt,
T. Biktagirov, I. Aharonovich, A. Gottscholl, A. Sperlich, V. Dyakonov, V.A. Soltamov,
Nano Letters 22 (2022) 2718–2724.
date_created: 2023-01-20T11:21:22Z
date_updated: 2025-12-05T13:57:24Z
department:
- _id: '15'
- _id: '170'
- _id: '295'
- _id: '230'
- _id: '429'
- _id: '35'
- _id: '790'
doi: 10.1021/acs.nanolett.1c04610
intvolume: ' 22'
issue: '7'
keyword:
- Mechanical Engineering
- Condensed Matter Physics
- General Materials Science
- General Chemistry
- Bioengineering
language:
- iso: eng
page: 2718-2724
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '166'
name: 'TRR 142 - A11: TRR 142 - Subproject A11'
- _id: '168'
name: 'TRR 142 - B07: TRR 142 - Subproject B07'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: Nano Letters
publication_identifier:
issn:
- 1530-6984
- 1530-6992
publication_status: published
publisher: American Chemical Society (ACS)
status: public
title: Electron–Nuclear Coherent Coupling and Nuclear Spin Readout through Optically
Polarized VB– Spin States in hBN
type: journal_article
user_id: '16199'
volume: 22
year: '2022'
...
---
_id: '33080'
article_number: '2203588'
author:
- first_name: Teng
full_name: Long, Teng
last_name: Long
- first_name: Xuekai
full_name: Ma, Xuekai
id: '59416'
last_name: Ma
- first_name: Jiahuan
full_name: Ren, Jiahuan
last_name: Ren
- first_name: Feng
full_name: Li, Feng
last_name: Li
- first_name: Qing
full_name: Liao, Qing
last_name: Liao
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: Guillaume
full_name: Malpuech, Guillaume
last_name: Malpuech
- first_name: Dmitry
full_name: Solnyshkov, Dmitry
last_name: Solnyshkov
- first_name: Hongbing
full_name: Fu, Hongbing
last_name: Fu
citation:
ama: Long T, Ma X, Ren J, et al. Helical Polariton Lasing from Topological Valleys
in an Organic Crystalline Microcavity. Advanced Science. 2022;9(29). doi:10.1002/advs.202203588
apa: Long, T., Ma, X., Ren, J., Li, F., Liao, Q., Schumacher, S., Malpuech, G.,
Solnyshkov, D., & Fu, H. (2022). Helical Polariton Lasing from Topological
Valleys in an Organic Crystalline Microcavity. Advanced Science, 9(29),
Article 2203588. https://doi.org/10.1002/advs.202203588
bibtex: '@article{Long_Ma_Ren_Li_Liao_Schumacher_Malpuech_Solnyshkov_Fu_2022, title={Helical
Polariton Lasing from Topological Valleys in an Organic Crystalline Microcavity},
volume={9}, DOI={10.1002/advs.202203588},
number={292203588}, journal={Advanced Science}, publisher={Wiley}, author={Long,
Teng and Ma, Xuekai and Ren, Jiahuan and Li, Feng and Liao, Qing and Schumacher,
Stefan and Malpuech, Guillaume and Solnyshkov, Dmitry and Fu, Hongbing}, year={2022}
}'
chicago: Long, Teng, Xuekai Ma, Jiahuan Ren, Feng Li, Qing Liao, Stefan Schumacher,
Guillaume Malpuech, Dmitry Solnyshkov, and Hongbing Fu. “Helical Polariton Lasing
from Topological Valleys in an Organic Crystalline Microcavity.” Advanced Science
9, no. 29 (2022). https://doi.org/10.1002/advs.202203588.
ieee: 'T. Long et al., “Helical Polariton Lasing from Topological Valleys
in an Organic Crystalline Microcavity,” Advanced Science, vol. 9, no. 29,
Art. no. 2203588, 2022, doi: 10.1002/advs.202203588.'
mla: Long, Teng, et al. “Helical Polariton Lasing from Topological Valleys in an
Organic Crystalline Microcavity.” Advanced Science, vol. 9, no. 29, 2203588,
Wiley, 2022, doi:10.1002/advs.202203588.
short: T. Long, X. Ma, J. Ren, F. Li, Q. Liao, S. Schumacher, G. Malpuech, D. Solnyshkov,
H. Fu, Advanced Science 9 (2022).
date_created: 2022-08-22T19:05:04Z
date_updated: 2025-12-05T13:56:26Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '230'
- _id: '429'
- _id: '35'
doi: 10.1002/advs.202203588
intvolume: ' 9'
issue: '29'
keyword:
- General Physics and Astronomy
- General Engineering
- Biochemistry
- Genetics and Molecular Biology (miscellaneous)
- General Materials Science
- General Chemical Engineering
- Medicine (miscellaneous)
language:
- iso: eng
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '61'
name: 'TRR 142 - A4: TRR 142 - Subproject A4'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: Advanced Science
publication_identifier:
issn:
- 2198-3844
- 2198-3844
publication_status: published
publisher: Wiley
status: public
title: Helical Polariton Lasing from Topological Valleys in an Organic Crystalline
Microcavity
type: journal_article
user_id: '16199'
volume: 9
year: '2022'
...
---
_id: '32310'
article_number: '3785'
author:
- first_name: Yao
full_name: Li, Yao
last_name: Li
- first_name: Xuekai
full_name: Ma, Xuekai
id: '59416'
last_name: Ma
- first_name: Xiaokun
full_name: Zhai, Xiaokun
last_name: Zhai
- first_name: Meini
full_name: Gao, Meini
last_name: Gao
- first_name: Haitao
full_name: Dai, Haitao
last_name: Dai
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: Tingge
full_name: Gao, Tingge
last_name: Gao
citation:
ama: Li Y, Ma X, Zhai X, et al. Manipulating polariton condensates by Rashba-Dresselhaus
coupling at room temperature. Nature Communications. 2022;13(1). doi:10.1038/s41467-022-31529-4
apa: Li, Y., Ma, X., Zhai, X., Gao, M., Dai, H., Schumacher, S., & Gao, T. (2022).
Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature.
Nature Communications, 13(1), Article 3785. https://doi.org/10.1038/s41467-022-31529-4
bibtex: '@article{Li_Ma_Zhai_Gao_Dai_Schumacher_Gao_2022, title={Manipulating polariton
condensates by Rashba-Dresselhaus coupling at room temperature}, volume={13},
DOI={10.1038/s41467-022-31529-4},
number={13785}, journal={Nature Communications}, publisher={Springer Science and
Business Media LLC}, author={Li, Yao and Ma, Xuekai and Zhai, Xiaokun and Gao,
Meini and Dai, Haitao and Schumacher, Stefan and Gao, Tingge}, year={2022} }'
chicago: Li, Yao, Xuekai Ma, Xiaokun Zhai, Meini Gao, Haitao Dai, Stefan Schumacher,
and Tingge Gao. “Manipulating Polariton Condensates by Rashba-Dresselhaus Coupling
at Room Temperature.” Nature Communications 13, no. 1 (2022). https://doi.org/10.1038/s41467-022-31529-4.
ieee: 'Y. Li et al., “Manipulating polariton condensates by Rashba-Dresselhaus
coupling at room temperature,” Nature Communications, vol. 13, no. 1, Art.
no. 3785, 2022, doi: 10.1038/s41467-022-31529-4.'
mla: Li, Yao, et al. “Manipulating Polariton Condensates by Rashba-Dresselhaus Coupling
at Room Temperature.” Nature Communications, vol. 13, no. 1, 3785, Springer
Science and Business Media LLC, 2022, doi:10.1038/s41467-022-31529-4.
short: Y. Li, X. Ma, X. Zhai, M. Gao, H. Dai, S. Schumacher, T. Gao, Nature Communications
13 (2022).
date_created: 2022-07-01T09:12:53Z
date_updated: 2025-12-05T13:54:19Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '230'
- _id: '429'
- _id: '623'
- _id: '35'
doi: 10.1038/s41467-022-31529-4
intvolume: ' 13'
issue: '1'
keyword:
- General Physics and Astronomy
- General Biochemistry
- Genetics and Molecular Biology
- General Chemistry
- Multidisciplinary
language:
- iso: eng
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '61'
name: 'TRR 142 - A4: TRR 142 - Subproject A4'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature
type: journal_article
user_id: '16199'
volume: 13
year: '2022'
...
---
_id: '32148'
author:
- first_name: Xinghui
full_name: Gao, Xinghui
last_name: Gao
- first_name: Wei
full_name: Hu, Wei
last_name: Hu
- first_name: Stefan
full_name: Schumacher, Stefan
id: '27271'
last_name: Schumacher
orcid: 0000-0003-4042-4951
- first_name: Xuekai
full_name: Ma, Xuekai
id: '59416'
last_name: Ma
citation:
ama: Gao X, Hu W, Schumacher S, Ma X. Unidirectional vortex waveguides and multistable
vortex pairs in polariton condensates. Optics Letters. 2022;47(13):3235-3238.
doi:10.1364/ol.457724
apa: Gao, X., Hu, W., Schumacher, S., & Ma, X. (2022). Unidirectional vortex
waveguides and multistable vortex pairs in polariton condensates. Optics Letters,
47(13), 3235–3238. https://doi.org/10.1364/ol.457724
bibtex: '@article{Gao_Hu_Schumacher_Ma_2022, title={Unidirectional vortex waveguides
and multistable vortex pairs in polariton condensates}, volume={47}, DOI={10.1364/ol.457724},
number={13}, journal={Optics Letters}, publisher={Optica Publishing Group}, author={Gao,
Xinghui and Hu, Wei and Schumacher, Stefan and Ma, Xuekai}, year={2022}, pages={3235–3238}
}'
chicago: 'Gao, Xinghui, Wei Hu, Stefan Schumacher, and Xuekai Ma. “Unidirectional
Vortex Waveguides and Multistable Vortex Pairs in Polariton Condensates.” Optics
Letters 47, no. 13 (2022): 3235–38. https://doi.org/10.1364/ol.457724.'
ieee: 'X. Gao, W. Hu, S. Schumacher, and X. Ma, “Unidirectional vortex waveguides
and multistable vortex pairs in polariton condensates,” Optics Letters,
vol. 47, no. 13, pp. 3235–3238, 2022, doi: 10.1364/ol.457724.'
mla: Gao, Xinghui, et al. “Unidirectional Vortex Waveguides and Multistable Vortex
Pairs in Polariton Condensates.” Optics Letters, vol. 47, no. 13, Optica
Publishing Group, 2022, pp. 3235–38, doi:10.1364/ol.457724.
short: X. Gao, W. Hu, S. Schumacher, X. Ma, Optics Letters 47 (2022) 3235–3238.
date_created: 2022-06-24T07:38:11Z
date_updated: 2025-12-05T13:55:22Z
department:
- _id: '15'
- _id: '170'
- _id: '297'
- _id: '705'
- _id: '230'
- _id: '429'
- _id: '35'
doi: 10.1364/ol.457724
intvolume: ' 47'
issue: '13'
keyword:
- Atomic and Molecular Physics
- and Optics
language:
- iso: eng
page: 3235-3238
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '61'
name: 'TRR 142 - A4: TRR 142 - Subproject A4'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: Optics Letters
publication_identifier:
issn:
- 0146-9592
- 1539-4794
publication_status: published
publisher: Optica Publishing Group
status: public
title: Unidirectional vortex waveguides and multistable vortex pairs in polariton
condensates
type: journal_article
user_id: '16199'
volume: 47
year: '2022'
...
---
_id: '30288'
abstract:
- lang: eng
text: Lithium niobate (LiNbO3), a material frequently used in optical applications,
hosts different kinds of polarons that significantly affect many of its physical
properties. In this study, a variety of electron polarons, namely free, bound,
and bipolarons, are analyzed using first-principles calculations. We perform a
full structural optimization based on density-functional theory for selected intrinsic
defects with special attention to the role of symmetry-breaking distortions that
lower the total energy. The cations hosting the various polarons relax to a different
degree, with a larger relaxation corresponding to a larger gap between the defect
level and the conduction-band edge. The projected density of states reveals that
the polaron states are formerly empty Nb 4d states lowered into the band gap.
Optical absorption spectra are derived within the independent-particle approximation,
corrected by the GW approximation that yields a wider band gap and by including
excitonic effects within the Bethe-Salpeter equation. Comparing the calculated
spectra with the density of states, we find that the defect peak observed in the
optical absorption stems from transitions between the defect level and a continuum
of empty Nb 4d states. Signatures of polarons are further analyzed in the reflectivity
and other experimentally measurable optical coefficients.
author:
- first_name: Falko
full_name: Schmidt, Falko
id: '35251'
last_name: Schmidt
orcid: 0000-0002-5071-5528
- first_name: Agnieszka L.
full_name: Kozub, Agnieszka L.
id: '77566'
last_name: Kozub
orcid: https://orcid.org/0000-0001-6584-0201
- first_name: Uwe
full_name: Gerstmann, Uwe
id: '171'
last_name: Gerstmann
orcid: 0000-0002-4476-223X
- first_name: Wolf Gero
full_name: Schmidt, Wolf Gero
id: '468'
last_name: Schmidt
orcid: 0000-0002-2717-5076
- first_name: Arno
full_name: Schindlmayr, Arno
id: '458'
last_name: Schindlmayr
orcid: 0000-0002-4855-071X
citation:
ama: 'Schmidt F, Kozub AL, Gerstmann U, Schmidt WG, Schindlmayr A. Electron polarons
in lithium niobate: Charge localization, lattice deformation, and optical response.
In: Corradi G, Kovács L, eds. New Trends in Lithium Niobate: From Bulk to Nanocrystals.
MDPI; 2022:231-248. doi:10.3390/books978-3-0365-3339-1'
apa: 'Schmidt, F., Kozub, A. L., Gerstmann, U., Schmidt, W. G., & Schindlmayr,
A. (2022). Electron polarons in lithium niobate: Charge localization, lattice
deformation, and optical response. In G. Corradi & L. Kovács (Eds.), New
Trends in Lithium Niobate: From Bulk to Nanocrystals (pp. 231–248). MDPI.
https://doi.org/10.3390/books978-3-0365-3339-1'
bibtex: '@inbook{Schmidt_Kozub_Gerstmann_Schmidt_Schindlmayr_2022, place={Basel},
title={Electron polarons in lithium niobate: Charge localization, lattice deformation,
and optical response}, DOI={10.3390/books978-3-0365-3339-1},
booktitle={New Trends in Lithium Niobate: From Bulk to Nanocrystals}, publisher={MDPI},
author={Schmidt, Falko and Kozub, Agnieszka L. and Gerstmann, Uwe and Schmidt,
Wolf Gero and Schindlmayr, Arno}, editor={Corradi, Gábor and Kovács, László},
year={2022}, pages={231–248} }'
chicago: 'Schmidt, Falko, Agnieszka L. Kozub, Uwe Gerstmann, Wolf Gero Schmidt,
and Arno Schindlmayr. “Electron Polarons in Lithium Niobate: Charge Localization,
Lattice Deformation, and Optical Response.” In New Trends in Lithium Niobate:
From Bulk to Nanocrystals, edited by Gábor Corradi and László Kovács, 231–48.
Basel: MDPI, 2022. https://doi.org/10.3390/books978-3-0365-3339-1.'
ieee: 'F. Schmidt, A. L. Kozub, U. Gerstmann, W. G. Schmidt, and A. Schindlmayr,
“Electron polarons in lithium niobate: Charge localization, lattice deformation,
and optical response,” in New Trends in Lithium Niobate: From Bulk to Nanocrystals,
G. Corradi and L. Kovács, Eds. Basel: MDPI, 2022, pp. 231–248.'
mla: 'Schmidt, Falko, et al. “Electron Polarons in Lithium Niobate: Charge Localization,
Lattice Deformation, and Optical Response.” New Trends in Lithium Niobate:
From Bulk to Nanocrystals, edited by Gábor Corradi and László Kovács, MDPI,
2022, pp. 231–48, doi:10.3390/books978-3-0365-3339-1.'
short: 'F. Schmidt, A.L. Kozub, U. Gerstmann, W.G. Schmidt, A. Schindlmayr, in:
G. Corradi, L. Kovács (Eds.), New Trends in Lithium Niobate: From Bulk to Nanocrystals,
MDPI, Basel, 2022, pp. 231–248.'
date_created: 2022-03-13T15:28:47Z
date_updated: 2025-12-05T14:00:04Z
ddc:
- '530'
department:
- _id: '296'
- _id: '230'
- _id: '429'
- _id: '295'
- _id: '15'
- _id: '170'
- _id: '35'
- _id: '790'
doi: 10.3390/books978-3-0365-3339-1
editor:
- first_name: Gábor
full_name: Corradi, Gábor
last_name: Corradi
- first_name: László
full_name: Kovács, László
last_name: Kovács
language:
- iso: eng
page: 231-248
place: Basel
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '55'
name: 'TRR 142 - B: TRR 142 - Project Area B'
- _id: '69'
name: 'TRR 142 - B4: TRR 142 - Subproject B4'
- _id: '54'
name: 'TRR 142 - A: TRR 142 - Project Area A'
- _id: '166'
name: 'TRR 142 - A11: TRR 142 - Subproject A11'
- _id: '168'
name: 'TRR 142 - B07: TRR 142 - Subproject B07'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: 'New Trends in Lithium Niobate: From Bulk to Nanocrystals'
publication_identifier:
eisbn:
- 978-3-0365-3339-1
isbn:
- 978-3-0365-3340-7
publication_status: published
publisher: MDPI
quality_controlled: '1'
status: public
title: 'Electron polarons in lithium niobate: Charge localization, lattice deformation,
and optical response'
type: book_chapter
user_id: '16199'
year: '2022'
...
---
_id: '47627'
abstract:
- lang: eng
text: In Germany, dual learning programmes are increasingly offered by higher education
institutions. These programmes’ main characteristic and greatest challenge is
their integration of academic and vocational learning. So far, this challenge
has frequently been stated without specifying its exact nature and consequences
for learners. The present study addresses this pedagogical research gap and examines
the extent of variation in the degree of integration among dual study programmes.
With reference to curriculum theory, the study develops an empirical typology
of curricular integration in dual programmes. The data sample consists of 152
programmes at (dual) universities and universities of applied sciences. Data is
analysed using hierarchical cluster analysis. Results indicate that the currently
prevailing forms of curricular integration should best be differentiated according
to five types. The five overlapping types of integration are located on a continuum
ranging from parallelism through organisational linking to full curricular integration
targeted immediately at students’ personal integration. The analysis confirms
that there are problems with complying with integration standards set on the policy
level. Above all, the study offers new insights on what marks the diverse integration
landscape of dual study programmes. It proves that approaches to integration are
more differentiated than previous research has shown.
article_type: original
author:
- first_name: Lisa
full_name: Mordhorst, Lisa
id: '81839'
last_name: Mordhorst
- first_name: Tobias
full_name: Jenert, Tobias
id: '71994'
last_name: Jenert
orcid: ' https://orcid.org/0000-0001-9262-5646'
citation:
ama: 'Mordhorst L, Jenert T. Curricular integration of academic and vocational education:
a theory-based empirical typology of dual study programmes in Germany. Higher
Education. 2022;85(6):1257-1279. doi:10.1007/s10734-022-00889-7'
apa: 'Mordhorst, L., & Jenert, T. (2022). Curricular integration of academic
and vocational education: a theory-based empirical typology of dual study programmes
in Germany. Higher Education, 85(6), 1257–1279. https://doi.org/10.1007/s10734-022-00889-7'
bibtex: '@article{Mordhorst_Jenert_2022, title={Curricular integration of academic
and vocational education: a theory-based empirical typology of dual study programmes
in Germany}, volume={85}, DOI={10.1007/s10734-022-00889-7},
number={6}, journal={Higher Education}, publisher={Springer Science and Business
Media LLC}, author={Mordhorst, Lisa and Jenert, Tobias}, year={2022}, pages={1257–1279}
}'
chicago: 'Mordhorst, Lisa, and Tobias Jenert. “Curricular Integration of Academic
and Vocational Education: A Theory-Based Empirical Typology of Dual Study Programmes
in Germany.” Higher Education 85, no. 6 (2022): 1257–79. https://doi.org/10.1007/s10734-022-00889-7.'
ieee: 'L. Mordhorst and T. Jenert, “Curricular integration of academic and vocational
education: a theory-based empirical typology of dual study programmes in Germany,”
Higher Education, vol. 85, no. 6, pp. 1257–1279, 2022, doi: 10.1007/s10734-022-00889-7.'
mla: 'Mordhorst, Lisa, and Tobias Jenert. “Curricular Integration of Academic and
Vocational Education: A Theory-Based Empirical Typology of Dual Study Programmes
in Germany.” Higher Education, vol. 85, no. 6, Springer Science and Business
Media LLC, 2022, pp. 1257–79, doi:10.1007/s10734-022-00889-7.'
short: L. Mordhorst, T. Jenert, Higher Education 85 (2022) 1257–1279.
date_created: 2023-10-05T09:25:30Z
date_updated: 2025-12-08T10:44:17Z
department:
- _id: '282'
- _id: '208'
- _id: '640'
doi: 10.1007/s10734-022-00889-7
intvolume: ' 85'
issue: '6'
keyword:
- Dual study programmes · Curricular integration · Curriculum theory · Empirical typology
· Cluster analysis · Germany
language:
- iso: eng
main_file_link:
- url: https://doi.org/10.1007/s10734-022-00889-7
page: 1257-1279
publication: Higher Education
publication_identifier:
issn:
- 0018-1560
- 1573-174X
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: 'Curricular integration of academic and vocational education: a theory-based
empirical typology of dual study programmes in Germany'
type: journal_article
user_id: '71994'
volume: 85
year: '2022'
...
---
_id: '35830'
author:
- first_name: Julia
full_name: Elsner, Julia
id: '54277'
last_name: Elsner
- first_name: Claudia
full_name: Tenberge, Claudia
id: '67302'
last_name: Tenberge
- first_name: Sabine
full_name: Fechner, Sabine
id: '54823'
last_name: Fechner
orcid: 0000-0001-5645-5870
citation:
ama: 'Elsner J, Tenberge C, Fechner S. Modeling-based learning about chemical phenomena
in primary education. In: Carvalho GS, Afonso AS, Anastácio Z, eds. Fostering
Scientific Citizenship in an Uncertain World (Proceedings of ESERA 2021).
CIEC, University of Minho; 2022:1241-1249.'
apa: Elsner, J., Tenberge, C., & Fechner, S. (2022). Modeling-based learning
about chemical phenomena in primary education. In G. S. Carvalho, A. S. Afonso,
& Z. Anastácio (Eds.), Fostering scientific citizenship in an uncertain
world (Proceedings of ESERA 2021) (pp. 1241–1249). CIEC, University of Minho.
bibtex: '@inproceedings{Elsner_Tenberge_Fechner_2022, place={Braga}, title={Modeling-based
learning about chemical phenomena in primary education}, booktitle={Fostering
scientific citizenship in an uncertain world (Proceedings of ESERA 2021)}, publisher={CIEC,
University of Minho}, author={Elsner, Julia and Tenberge, Claudia and Fechner,
Sabine}, editor={Carvalho, Graça S. and Afonso, Ana Sofia and Anastácio, Zélia},
year={2022}, pages={1241–1249} }'
chicago: 'Elsner, Julia, Claudia Tenberge, and Sabine Fechner. “Modeling-Based Learning
about Chemical Phenomena in Primary Education.” In Fostering Scientific Citizenship
in an Uncertain World (Proceedings of ESERA 2021), edited by Graça S. Carvalho,
Ana Sofia Afonso, and Zélia Anastácio, 1241–49. Braga: CIEC, University of Minho,
2022.'
ieee: J. Elsner, C. Tenberge, and S. Fechner, “Modeling-based learning about chemical
phenomena in primary education,” in Fostering scientific citizenship in an
uncertain world (Proceedings of ESERA 2021), 2022, pp. 1241–1249.
mla: Elsner, Julia, et al. “Modeling-Based Learning about Chemical Phenomena in
Primary Education.” Fostering Scientific Citizenship in an Uncertain World
(Proceedings of ESERA 2021), edited by Graça S. Carvalho et al., CIEC, University
of Minho, 2022, pp. 1241–49.
short: 'J. Elsner, C. Tenberge, S. Fechner, in: G.S. Carvalho, A.S. Afonso, Z. Anastácio
(Eds.), Fostering Scientific Citizenship in an Uncertain World (Proceedings of
ESERA 2021), CIEC, University of Minho, Braga, 2022, pp. 1241–1249.'
date_created: 2023-01-10T12:10:53Z
date_updated: 2025-12-11T13:26:01Z
ddc:
- '370'
department:
- _id: '386'
- _id: '588'
- _id: '33'
editor:
- first_name: Graça S.
full_name: Carvalho, Graça S.
last_name: Carvalho
- first_name: Ana Sofia
full_name: Afonso, Ana Sofia
last_name: Afonso
- first_name: Zélia
full_name: Anastácio, Zélia
last_name: Anastácio
language:
- iso: eng
page: 1241-1249
place: Braga
publication: Fostering scientific citizenship in an uncertain world (Proceedings of
ESERA 2021)
publication_status: published
publisher: CIEC, University of Minho
quality_controlled: '1'
status: public
title: Modeling-based learning about chemical phenomena in primary education
type: conference
user_id: '54823'
year: '2022'
...
---
_id: '41800'
author:
- first_name: M
full_name: Sartison, M
last_name: Sartison
- first_name: O
full_name: ' Camacho Ibarra, O'
last_name: ' Camacho Ibarra'
- first_name: Klaus D.
full_name: Jöns, Klaus D.
id: '85353'
last_name: Jöns
- first_name: I
full_name: Caltzidis, I
last_name: Caltzidis
- first_name: Dirk
full_name: Reuter, Dirk
id: '37763'
last_name: Reuter
citation:
ama: Sartison M, Camacho Ibarra O, Jöns KD, Caltzidis I, Reuter D. Scalable integration
of quantum emitters into photonic integrated circuits. 2022;2. doi:https://doi.org/10.1088/2633-4356/ac6f3e
apa: Sartison, M., Camacho Ibarra, O., Jöns, K. D., Caltzidis, I., & Reuter,
D. (2022). Scalable integration of quantum emitters into photonic integrated
circuits (Vol. 2). https://doi.org/10.1088/2633-4356/ac6f3e
bibtex: '@article{Sartison_ Camacho Ibarra_Jöns_Caltzidis_Reuter_2022, series={Materials
for Quantum Technology}, title={Scalable integration of quantum emitters into
photonic integrated circuits}, volume={2}, DOI={https://doi.org/10.1088/2633-4356/ac6f3e},
author={Sartison, M and Camacho Ibarra, O and Jöns, Klaus D. and Caltzidis, I
and Reuter, Dirk}, year={2022}, collection={Materials for Quantum Technology}
}'
chicago: Sartison, M, O Camacho Ibarra, Klaus D. Jöns, I Caltzidis, and Dirk Reuter.
“Scalable integration of quantum emitters into photonic integrated circuits.”
Materials for Quantum Technology, 2022. https://doi.org/10.1088/2633-4356/ac6f3e.
ieee: 'M. Sartison, O. Camacho Ibarra, K. D. Jöns, I. Caltzidis, and D. Reuter,
“Scalable integration of quantum emitters into photonic integrated circuits,”
vol. 2. 2022, doi: https://doi.org/10.1088/2633-4356/ac6f3e.'
mla: Sartison, M., et al. Scalable integration of quantum emitters into photonic
integrated circuits. 2022, doi:https://doi.org/10.1088/2633-4356/ac6f3e.
short: M. Sartison, O. Camacho Ibarra, K.D. Jöns, I. Caltzidis, D. Reuter, 2 (2022).
date_created: 2023-02-06T02:30:08Z
date_updated: 2025-12-11T13:09:55Z
department:
- _id: '623'
- _id: '15'
- _id: '429'
- _id: '642'
doi: https://doi.org/10.1088/2633-4356/ac6f3e
intvolume: ' 2'
language:
- iso: ger
publication_status: published
series_title: Materials for Quantum Technology
status: public
title: Scalable integration of quantum emitters into photonic integrated circuits
type: conference
user_id: '48188'
volume: 2
year: '2022'
...
---
_id: '62967'
author:
- first_name: Pascal
full_name: Pollmeier, Pascal
id: '44191'
last_name: Pollmeier
- first_name: Sabine
full_name: Fechner, Sabine
id: '54823'
last_name: Fechner
orcid: 0000-0001-5645-5870
citation:
ama: 'Pollmeier P, Fechner S. Preservice science teachers‘ competences in evidence
based practice a longitudinal case study. In: Conference of National Association
for Research in Science Teaching (NARST). ; 2022.'
apa: Pollmeier, P., & Fechner, S. (2022). Preservice science teachers‘ competences
in evidence based practice a longitudinal case study. Conference of National
Association for Research in Science Teaching (NARST). Conference of National
Association for Research in Science Teaching (NARST), Vancouver.
bibtex: '@inproceedings{Pollmeier_Fechner_2022, title={Preservice science teachers‘
competences in evidence based practice a longitudinal case study}, booktitle={Conference
of National Association for Research in Science Teaching (NARST)}, author={Pollmeier,
Pascal and Fechner, Sabine}, year={2022} }'
chicago: Pollmeier, Pascal, and Sabine Fechner. “Preservice Science Teachers‘ Competences
in Evidence Based Practice a Longitudinal Case Study.” In Conference of National
Association for Research in Science Teaching (NARST), 2022.
ieee: P. Pollmeier and S. Fechner, “Preservice science teachers‘ competences in
evidence based practice a longitudinal case study,” presented at the Conference
of National Association for Research in Science Teaching (NARST), Vancouver, 2022.
mla: Pollmeier, Pascal, and Sabine Fechner. “Preservice Science Teachers‘ Competences
in Evidence Based Practice a Longitudinal Case Study.” Conference of National
Association for Research in Science Teaching (NARST), 2022.
short: 'P. Pollmeier, S. Fechner, in: Conference of National Association for Research
in Science Teaching (NARST), 2022.'
conference:
location: Vancouver
name: Conference of National Association for Research in Science Teaching (NARST)
date_created: 2025-12-08T09:52:35Z
date_updated: 2025-12-11T13:37:52Z
department:
- _id: '386'
- _id: '33'
keyword:
- Epistemologie
- Evidenzen
- Daten
- Umgang mit Daten
- Kompetenzen
- Studierende
language:
- iso: eng
publication: Conference of National Association for Research in Science Teaching (NARST)
quality_controlled: '1'
status: public
title: Preservice science teachers‘ competences in evidence based practice a longitudinal
case study
type: conference_abstract
user_id: '54823'
year: '2022'
...
---
_id: '33224'
author:
- first_name: Hendrik
full_name: Peeters, Hendrik
id: '49942'
last_name: Peeters
orcid: https://orcid.org/ 0000-0002-7143-3781
- first_name: Sebastian
full_name: Habig, Sebastian
last_name: Habig
- first_name: Sabine
full_name: Fechner, Sabine
id: '54823'
last_name: Fechner
orcid: 0000-0001-5645-5870
citation:
ama: 'Peeters H, Habig S, Fechner S. Einbettung von Augmented Reality in den Experimentierprozess.
In: Habig S, van Vorst H, eds. Unsicherheit als Element von naturwissenschaftsbezogenen
Bildungsprozessen. Vol 42. ; 2022:788-791.'
apa: Peeters, H., Habig, S., & Fechner, S. (2022). Einbettung von Augmented
Reality in den Experimentierprozess. In S. Habig & H. van Vorst (Eds.), Unsicherheit
als Element von naturwissenschaftsbezogenen Bildungsprozessen (Vol. 42, pp.
788–791).
bibtex: '@inproceedings{Peeters_Habig_Fechner_2022, title={Einbettung von Augmented
Reality in den Experimentierprozess}, volume={42}, booktitle={Unsicherheit als
Element von naturwissenschaftsbezogenen Bildungsprozessen}, author={Peeters, Hendrik
and Habig, Sebastian and Fechner, Sabine}, editor={Habig, Sebastian and van Vorst,
Helena}, year={2022}, pages={788–791} }'
chicago: Peeters, Hendrik, Sebastian Habig, and Sabine Fechner. “Einbettung von
Augmented Reality in den Experimentierprozess.” In Unsicherheit als Element
von naturwissenschaftsbezogenen Bildungsprozessen, edited by Sebastian Habig
and Helena van Vorst, 42:788–91, 2022.
ieee: H. Peeters, S. Habig, and S. Fechner, “Einbettung von Augmented Reality in
den Experimentierprozess,” in Unsicherheit als Element von naturwissenschaftsbezogenen
Bildungsprozessen, 2022, vol. 42, pp. 788–791.
mla: Peeters, Hendrik, et al. “Einbettung von Augmented Reality in den Experimentierprozess.”
Unsicherheit als Element von naturwissenschaftsbezogenen Bildungsprozessen,
edited by Sebastian Habig and Helena van Vorst, vol. 42, 2022, pp. 788–91.
short: 'H. Peeters, S. Habig, S. Fechner, in: S. Habig, H. van Vorst (Eds.), Unsicherheit
als Element von naturwissenschaftsbezogenen Bildungsprozessen, 2022, pp. 788–791.'
date_created: 2022-08-29T14:12:09Z
date_updated: 2025-12-11T13:37:30Z
department:
- _id: '386'
- _id: '33'
editor:
- first_name: Sebastian
full_name: Habig, Sebastian
last_name: Habig
- first_name: Helena
full_name: van Vorst, Helena
last_name: van Vorst
intvolume: ' 42'
keyword:
- augmented reality
- modelle
- digitale Medien
language:
- iso: ger
main_file_link:
- open_access: '1'
url: https://www.gdcp-ev.de/wp-content/tb2022/TB2022_788_Peeters.pdf
oa: '1'
page: 788-791
publication: Unsicherheit als Element von naturwissenschaftsbezogenen Bildungsprozessen
status: public
title: Einbettung von Augmented Reality in den Experimentierprozess
type: conference
user_id: '54823'
volume: 42
year: '2022'
...
---
_id: '62966'
author:
- first_name: Pascal
full_name: Pollmeier, Pascal
id: '44191'
last_name: Pollmeier
- first_name: Sabine
full_name: Fechner, Sabine
id: '54823'
last_name: Fechner
orcid: 0000-0001-5645-5870
citation:
ama: 'Pollmeier P, Fechner S. Einfluss des Praxissemesters auf den Umgang mit Evidenzen
im Unterricht. In: Jahrestagung Der Gesellschaft Für Didaktik Der Chemie Und
Physik e.V. ; 2022.'
apa: Pollmeier, P., & Fechner, S. (2022). Einfluss des Praxissemesters auf den
Umgang mit Evidenzen im Unterricht. Jahrestagung Der Gesellschaft Für Didaktik
Der Chemie Und Physik e.V. Jahrestagung der Gesellschaft für Didaktik der
Chemie und Physik e.V., Aachen.
bibtex: '@inproceedings{Pollmeier_Fechner_2022, title={Einfluss des Praxissemesters
auf den Umgang mit Evidenzen im Unterricht}, booktitle={Jahrestagung der Gesellschaft
für Didaktik der Chemie und Physik e.V.}, author={Pollmeier, Pascal and Fechner,
Sabine}, year={2022} }'
chicago: Pollmeier, Pascal, and Sabine Fechner. “Einfluss Des Praxissemesters Auf
Den Umgang Mit Evidenzen Im Unterricht.” In Jahrestagung Der Gesellschaft Für
Didaktik Der Chemie Und Physik e.V., 2022.
ieee: P. Pollmeier and S. Fechner, “Einfluss des Praxissemesters auf den Umgang
mit Evidenzen im Unterricht,” presented at the Jahrestagung der Gesellschaft für
Didaktik der Chemie und Physik e.V., Aachen, 2022.
mla: Pollmeier, Pascal, and Sabine Fechner. “Einfluss Des Praxissemesters Auf Den
Umgang Mit Evidenzen Im Unterricht.” Jahrestagung Der Gesellschaft Für Didaktik
Der Chemie Und Physik e.V., 2022.
short: 'P. Pollmeier, S. Fechner, in: Jahrestagung Der Gesellschaft Für Didaktik
Der Chemie Und Physik e.V., 2022.'
conference:
location: Aachen
name: Jahrestagung der Gesellschaft für Didaktik der Chemie und Physik e.V.
date_created: 2025-12-08T09:49:32Z
date_updated: 2025-12-13T23:46:32Z
department:
- _id: '386'
- _id: '33'
keyword:
- Epistemologie
- Evidenzen
- Daten
- Umgang mit Daten
language:
- iso: eng
publication: Jahrestagung der Gesellschaft für Didaktik der Chemie und Physik e.V.
status: public
title: Einfluss des Praxissemesters auf den Umgang mit Evidenzen im Unterricht
type: conference_abstract
user_id: '54823'
year: '2022'
...
---
_id: '52237'
abstract:
- lang: ger
text: Wie sieht ein Argument aus und wie eine Konklusion? Diese Frage, die seit
Jahrhunderten auf der Ebene der Logik, der Rhetorik und der Dialektik diskutiert
wird, beschäftigt auch die moderne Sprachwissenschaft. Die sprachliche Ausgestaltung
von Argumentation ist so vielfältig, wie es auch das Phänomen der Argumentation
selbst ist. Eine neue Form der Kategorisierung und eine systematische Beschreibung
der Vielfalt dieser Argumentationsindikatoren stehen im Zentrum der vorliegenden
Studie. Die qualitative und quantitative Analyse ausgewählter Indikatoren des
Deutschen und des Französischen gewährt neue Erkenntnisse im Bereich des Sprachvergleichs
und der Übersetzungsforschung. Die Studie richtet sich an alle, die sich für die
Themen Argumentation, Übersetzung und deutsch-romanischer Sprachvergleich interessieren.
author:
- first_name: Irene Dorothea
full_name: Kunert, Irene Dorothea
id: '84452'
last_name: Kunert
citation:
ama: Kunert ID. Argumentationsindikatoren im Deutschen und im Französischen.
Stauffenburg; 2022.
apa: Kunert, I. D. (2022). Argumentationsindikatoren im Deutschen und im Französischen.
Stauffenburg.
bibtex: '@book{Kunert_2022, place={Tübingen}, series={Stauffenburg Romanistik 4},
title={Argumentationsindikatoren im Deutschen und im Französischen}, publisher={Stauffenburg},
author={Kunert, Irene Dorothea}, year={2022}, collection={Stauffenburg Romanistik
4} }'
chicago: 'Kunert, Irene Dorothea. Argumentationsindikatoren im Deutschen und
im Französischen. Stauffenburg Romanistik 4. Tübingen: Stauffenburg, 2022.'
ieee: 'I. D. Kunert, Argumentationsindikatoren im Deutschen und im Französischen.
Tübingen: Stauffenburg, 2022.'
mla: Kunert, Irene Dorothea. Argumentationsindikatoren im Deutschen und im Französischen.
Stauffenburg, 2022.
short: I.D. Kunert, Argumentationsindikatoren im Deutschen und im Französischen,
Stauffenburg, Tübingen, 2022.
date_created: 2024-03-03T19:07:27Z
date_updated: 2025-12-16T09:26:47Z
ddc:
- '440'
file:
- access_level: open_access
content_type: application/pdf
creator: ikunert
date_created: 2025-12-16T09:04:38Z
date_updated: 2025-12-16T09:26:46Z
file_id: '63112'
file_name: Kunert Dissertation Argumentationsindikatoren 2022.pdf
file_size: 3302209
relation: main_file
file_date_updated: 2025-12-16T09:26:46Z
has_accepted_license: '1'
language:
- iso: ger
oa: '1'
page: '402'
place: Tübingen
publication_status: published
publisher: Stauffenburg
series_title: Stauffenburg Romanistik 4
status: public
title: Argumentationsindikatoren im Deutschen und im Französischen
type: dissertation
user_id: '84452'
year: '2022'
...
---
_id: '40371'
abstract:
- lang: eng
text: Multimode integrated interferometers have great potential for both
spectral engineering and metrological applications. However, the material dispersion
of integrated platforms constitutes an obstacle that limits the performance and
precision of such interferometers. At the same time, two-colour nonlinear interferometers
present an important tool for metrological applications, when measurements in
a certain frequency range are difficult. In this manuscript, we theoretically
developed and investigated an integrated multimode two-colour SU(1,1) interferometer
operating in a supersensitive mode. By ensuring the proper design of the integrated
platform, we suppressed the dispersion, thereby significantly increasing the visibility
of the interference pattern. The use of a continuous wave pump laser provided
the symmetry between the spectral shapes of the signal and idler photons concerning
half the pump frequency, despite different photon colours. We demonstrate that
such an interferometer overcomes the classical phase sensitivity limit for wide
parametric gain ranges, when up to 3×104 photons are generated.
article_number: '552'
author:
- first_name: Alessandro
full_name: Ferreri, Alessandro
last_name: Ferreri
- first_name: Polina R.
full_name: Sharapova, Polina R.
id: '60286'
last_name: Sharapova
citation:
ama: Ferreri A, Sharapova PR. Two-Colour Spectrally Multimode Integrated SU(1,1)
Interferometer. Symmetry. 2022;14(3). doi:10.3390/sym14030552
apa: Ferreri, A., & Sharapova, P. R. (2022). Two-Colour Spectrally Multimode
Integrated SU(1,1) Interferometer. Symmetry, 14(3), Article 552.
https://doi.org/10.3390/sym14030552
bibtex: '@article{Ferreri_Sharapova_2022, title={Two-Colour Spectrally Multimode
Integrated SU(1,1) Interferometer}, volume={14}, DOI={10.3390/sym14030552},
number={3552}, journal={Symmetry}, publisher={MDPI AG}, author={Ferreri, Alessandro
and Sharapova, Polina R.}, year={2022} }'
chicago: Ferreri, Alessandro, and Polina R. Sharapova. “Two-Colour Spectrally Multimode
Integrated SU(1,1) Interferometer.” Symmetry 14, no. 3 (2022). https://doi.org/10.3390/sym14030552.
ieee: 'A. Ferreri and P. R. Sharapova, “Two-Colour Spectrally Multimode Integrated
SU(1,1) Interferometer,” Symmetry, vol. 14, no. 3, Art. no. 552, 2022,
doi: 10.3390/sym14030552.'
mla: Ferreri, Alessandro, and Polina R. Sharapova. “Two-Colour Spectrally Multimode
Integrated SU(1,1) Interferometer.” Symmetry, vol. 14, no. 3, 552, MDPI
AG, 2022, doi:10.3390/sym14030552.
short: A. Ferreri, P.R. Sharapova, Symmetry 14 (2022).
date_created: 2023-01-26T13:54:00Z
date_updated: 2025-12-16T11:27:11Z
department:
- _id: '15'
- _id: '569'
- _id: '170'
- _id: '429'
- _id: '230'
- _id: '9'
- _id: '27'
doi: 10.3390/sym14030552
intvolume: ' 14'
issue: '3'
keyword:
- Physics and Astronomy (miscellaneous)
- General Mathematics
- Chemistry (miscellaneous)
- Computer Science (miscellaneous)
language:
- iso: eng
project:
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
- _id: '72'
name: 'TRR 142 - C2: TRR 142 - Subproject C2'
- _id: '52'
name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing'
publication: Symmetry
publication_identifier:
issn:
- 2073-8994
publication_status: published
publisher: MDPI AG
status: public
title: Two-Colour Spectrally Multimode Integrated SU(1,1) Interferometer
type: journal_article
user_id: '16199'
volume: 14
year: '2022'
...
---
_id: '30210'
abstract:
- lang: eng
text: Lithium niobate on insulator (LNOI) has a great potential for photonic integrated
circuits, providing substantial versatility in design of various integrated components.
To properly use these components in the implementation of different quantum protocols,
photons with different properties are required. In this paper, we theoretically
demonstrate a flexible source of correlated photons built on the LNOI waveguide
of a special geometry. This source is based on the parametric down-conversion
(PDC) process, in which the signal and idler photons are generated at the telecom
wavelength and have different spatial profiles and polarizations, but the same
group velocities. Distinguishability in polarizations and spatial profiles facilitates
the routing and manipulating individual photons, while the equality of their group
velocities leads to the absence of temporal walk-off between photons. We show
how the spectral properties of the generated photons and the number of their frequency
modes can be controlled depending on the pump characteristics and the waveguide
length. Finally, we discuss special regimes, in which narrowband light with strong
frequency correlations and polarization-entangled Bell states are generated at
the telecom wavelength.
author:
- first_name: Lena
full_name: Ebers, Lena
id: '40428'
last_name: Ebers
- first_name: Alessandro
full_name: Ferreri, Alessandro
id: '65609'
last_name: Ferreri
- first_name: Manfred
full_name: Hammer, Manfred
id: '48077'
last_name: Hammer
orcid: 0000-0002-6331-9348
- first_name: Maximilian
full_name: Albert, Maximilian
last_name: Albert
- first_name: Cedrik
full_name: Meier, Cedrik
id: '20798'
last_name: Meier
orcid: https://orcid.org/0000-0002-3787-3572
- first_name: Jens
full_name: Förstner, Jens
id: '158'
last_name: Förstner
orcid: 0000-0001-7059-9862
- first_name: Polina R.
full_name: Sharapova, Polina R.
id: '60286'
last_name: Sharapova
citation:
ama: 'Ebers L, Ferreri A, Hammer M, et al. Flexible source of correlated photons
based on LNOI rib waveguides. Journal of Physics: Photonics. 2022;4:025001.
doi:10.1088/2515-7647/ac5a5b'
apa: 'Ebers, L., Ferreri, A., Hammer, M., Albert, M., Meier, C., Förstner, J., &
Sharapova, P. R. (2022). Flexible source of correlated photons based on LNOI rib
waveguides. Journal of Physics: Photonics, 4, 025001. https://doi.org/10.1088/2515-7647/ac5a5b'
bibtex: '@article{Ebers_Ferreri_Hammer_Albert_Meier_Förstner_Sharapova_2022, title={Flexible
source of correlated photons based on LNOI rib waveguides}, volume={4}, DOI={10.1088/2515-7647/ac5a5b},
journal={Journal of Physics: Photonics}, publisher={IOP Publishing}, author={Ebers,
Lena and Ferreri, Alessandro and Hammer, Manfred and Albert, Maximilian and Meier,
Cedrik and Förstner, Jens and Sharapova, Polina R.}, year={2022}, pages={025001}
}'
chicago: 'Ebers, Lena, Alessandro Ferreri, Manfred Hammer, Maximilian Albert, Cedrik
Meier, Jens Förstner, and Polina R. Sharapova. “Flexible Source of Correlated
Photons Based on LNOI Rib Waveguides.” Journal of Physics: Photonics 4
(2022): 025001. https://doi.org/10.1088/2515-7647/ac5a5b.'
ieee: 'L. Ebers et al., “Flexible source of correlated photons based on LNOI
rib waveguides,” Journal of Physics: Photonics, vol. 4, p. 025001, 2022,
doi: 10.1088/2515-7647/ac5a5b.'
mla: 'Ebers, Lena, et al. “Flexible Source of Correlated Photons Based on LNOI Rib
Waveguides.” Journal of Physics: Photonics, vol. 4, IOP Publishing, 2022,
p. 025001, doi:10.1088/2515-7647/ac5a5b.'
short: 'L. Ebers, A. Ferreri, M. Hammer, M. Albert, C. Meier, J. Förstner, P.R.
Sharapova, Journal of Physics: Photonics 4 (2022) 025001.'
date_created: 2022-03-07T09:51:50Z
date_updated: 2025-12-16T11:31:04Z
department:
- _id: '61'
- _id: '230'
- _id: '429'
- _id: '15'
- _id: '569'
- _id: '170'
- _id: '287'
- _id: '35'
- _id: '34'
doi: 10.1088/2515-7647/ac5a5b
intvolume: ' 4'
keyword:
- tet_topic_waveguide
language:
- iso: eng
page: '025001'
project:
- _id: '56'
name: 'TRR 142 - C: TRR 142 - Project Area C'
- _id: '75'
name: 'TRR 142 - C5: TRR 142 - Subproject C5'
- _id: '72'
name: 'TRR 142 - C2: TRR 142 - Subproject C2'
- _id: '53'
name: 'TRR 142: TRR 142'
- _id: '53'
name: 'TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten
zu funktionellen Strukturen'
publication: 'Journal of Physics: Photonics'
publication_identifier:
issn:
- 2515-7647
publication_status: published
publisher: IOP Publishing
related_material:
link:
- description: Corrigendum for table C1
relation: erratum
url: https://doi.org/10.1088/2515-7647/acc70c
status: public
title: Flexible source of correlated photons based on LNOI rib waveguides
type: journal_article
user_id: '16199'
volume: 4
year: '2022'
...