---
_id: '25227'
abstract:
- lang: eng
text: AbstractQuantum well (QW) heterostructures
have been extensively used for the realization of a wide range of optical and
electronic devices. Exploiting their potential for further improvement and development
requires a fundamental understanding of their electronic structure. So far, the
most commonly used experimental techniques for this purpose have been all-optical
spectroscopy methods that, however, are generally averaging in momentum space.
Additional information can be gained by angle-resolved photoelectron spectroscopy
(ARPES), which measures the electronic structure with momentum resolution. Here
we report on the use of extremely low-energy ARPES (photon energy ~ 7 eV) to increase
depth sensitivity and access buried QW states, located at 3 nm and 6 nm below
the surface of cubic-GaN/AlN and GaAs/AlGaAs heterostructures, respectively. We
find that the QW states in cubic-GaN/AlN can indeed be observed, but not their
energy dispersion, because of the high surface roughness. The GaAs/AlGaAs QW states,
on the other hand, are buried too deep to be detected by extremely low-energy
ARPES. Since the sample surface is much flatter, the ARPES spectra of the GaAs/AlGaAs
show distinct features in momentum space, which can be reconducted to the band
structure of the topmost surface layer of the QW structure. Our results provide
important information about the samples’ properties required to perform extremely
low-energy ARPES experiments on electronic states buried in semiconductor heterostructures.
article_number: '19081'
article_type: original
author:
- first_name: Mahdi
full_name: Hajlaoui, Mahdi
last_name: Hajlaoui
- first_name: Stefano
full_name: Ponzoni, Stefano
last_name: Ponzoni
- first_name: Michael
full_name: Deppe, Michael
last_name: Deppe
- first_name: Tobias
full_name: Henksmeier, Tobias
last_name: Henksmeier
- first_name: Donat Josef
full_name: As, Donat Josef
id: '14'
last_name: As
orcid: 0000-0003-1121-3565
- first_name: Dirk
full_name: Reuter, Dirk
id: '37763'
last_name: Reuter
- first_name: Thomas
full_name: Zentgraf, Thomas
id: '30525'
last_name: Zentgraf
orcid: 0000-0002-8662-1101
- first_name: Gunther
full_name: Springholz, Gunther
last_name: Springholz
- first_name: Claus Michael
full_name: Schneider, Claus Michael
last_name: Schneider
- first_name: Stefan
full_name: Cramm, Stefan
last_name: Cramm
- first_name: Mirko
full_name: Cinchetti, Mirko
last_name: Cinchetti
citation:
ama: Hajlaoui M, Ponzoni S, Deppe M, et al. Extremely low-energy ARPES of quantum
well states in cubic-GaN/AlN and GaAs/AlGaAs heterostructures. Scientific Reports.
2021;11. doi:10.1038/s41598-021-98569-6
apa: Hajlaoui, M., Ponzoni, S., Deppe, M., Henksmeier, T., As, D. J., Reuter, D.,
Zentgraf, T., Springholz, G., Schneider, C. M., Cramm, S., & Cinchetti, M.
(2021). Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN and
GaAs/AlGaAs heterostructures. Scientific Reports, 11, Article 19081.
https://doi.org/10.1038/s41598-021-98569-6
bibtex: '@article{Hajlaoui_Ponzoni_Deppe_Henksmeier_As_Reuter_Zentgraf_Springholz_Schneider_Cramm_et
al._2021, title={Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN
and GaAs/AlGaAs heterostructures}, volume={11}, DOI={10.1038/s41598-021-98569-6},
number={19081}, journal={Scientific Reports}, author={Hajlaoui, Mahdi and Ponzoni,
Stefano and Deppe, Michael and Henksmeier, Tobias and As, Donat Josef and Reuter,
Dirk and Zentgraf, Thomas and Springholz, Gunther and Schneider, Claus Michael
and Cramm, Stefan and et al.}, year={2021} }'
chicago: Hajlaoui, Mahdi, Stefano Ponzoni, Michael Deppe, Tobias Henksmeier, Donat
Josef As, Dirk Reuter, Thomas Zentgraf, et al. “Extremely Low-Energy ARPES of
Quantum Well States in Cubic-GaN/AlN and GaAs/AlGaAs Heterostructures.” Scientific
Reports 11 (2021). https://doi.org/10.1038/s41598-021-98569-6.
ieee: 'M. Hajlaoui et al., “Extremely low-energy ARPES of quantum well states
in cubic-GaN/AlN and GaAs/AlGaAs heterostructures,” Scientific Reports,
vol. 11, Art. no. 19081, 2021, doi: 10.1038/s41598-021-98569-6.'
mla: Hajlaoui, Mahdi, et al. “Extremely Low-Energy ARPES of Quantum Well States
in Cubic-GaN/AlN and GaAs/AlGaAs Heterostructures.” Scientific Reports,
vol. 11, 19081, 2021, doi:10.1038/s41598-021-98569-6.
short: M. Hajlaoui, S. Ponzoni, M. Deppe, T. Henksmeier, D.J. As, D. Reuter, T.
Zentgraf, G. Springholz, C.M. Schneider, S. Cramm, M. Cinchetti, Scientific Reports
11 (2021).
date_created: 2021-10-01T07:29:15Z
date_updated: 2023-10-09T09:15:12Z
department:
- _id: '15'
- _id: '230'
- _id: '289'
doi: 10.1038/s41598-021-98569-6
intvolume: ' 11'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.nature.com/articles/s41598-021-98569-6
oa: '1'
project:
- _id: '53'
grant_number: '231447078'
name: TRR 142
- _id: '54'
name: TRR 142 - Project Area A
- _id: '65'
grant_number: '231447078'
name: TRR 142 - Subproject A8
- _id: '55'
name: TRR 142 - Project Area B
- _id: '67'
name: TRR 142 - Subproject B2
- _id: '63'
grant_number: '231447078'
name: TRR 142 - Subproject A6
publication: Scientific Reports
publication_identifier:
issn:
- 2045-2322
publication_status: published
quality_controlled: '1'
status: public
title: Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN and GaAs/AlGaAs
heterostructures
type: journal_article
user_id: '14931'
volume: 11
year: '2021'
...
---
_id: '8646'
article_number: '095703'
author:
- first_name: M.
full_name: Deppe, M.
last_name: Deppe
- first_name: J. W.
full_name: Gerlach, J. W.
last_name: Gerlach
- first_name: S.
full_name: Shvarkov, S.
last_name: Shvarkov
- first_name: D.
full_name: Rogalla, D.
last_name: Rogalla
- first_name: H.-W.
full_name: Becker, H.-W.
last_name: Becker
- first_name: Dirk
full_name: Reuter, Dirk
id: '37763'
last_name: Reuter
- first_name: Donat Josef
full_name: As, Donat Josef
id: '14'
last_name: As
orcid: 0000-0003-1121-3565
citation:
ama: Deppe M, Gerlach JW, Shvarkov S, et al. Germanium doping of cubic GaN grown
by molecular beam epitaxy. Journal of Applied Physics. 2019. doi:10.1063/1.5066095
apa: Deppe, M., Gerlach, J. W., Shvarkov, S., Rogalla, D., Becker, H.-W., Reuter,
D., & As, D. J. (2019). Germanium doping of cubic GaN grown by molecular beam
epitaxy. Journal of Applied Physics. https://doi.org/10.1063/1.5066095
bibtex: '@article{Deppe_Gerlach_Shvarkov_Rogalla_Becker_Reuter_As_2019, title={Germanium
doping of cubic GaN grown by molecular beam epitaxy}, DOI={10.1063/1.5066095},
number={095703}, journal={Journal of Applied Physics}, author={Deppe, M. and Gerlach,
J. W. and Shvarkov, S. and Rogalla, D. and Becker, H.-W. and Reuter, Dirk and
As, Donat Josef}, year={2019} }'
chicago: Deppe, M., J. W. Gerlach, S. Shvarkov, D. Rogalla, H.-W. Becker, Dirk Reuter,
and Donat Josef As. “Germanium Doping of Cubic GaN Grown by Molecular Beam Epitaxy.”
Journal of Applied Physics, 2019. https://doi.org/10.1063/1.5066095.
ieee: M. Deppe et al., “Germanium doping of cubic GaN grown by molecular
beam epitaxy,” Journal of Applied Physics, 2019.
mla: Deppe, M., et al. “Germanium Doping of Cubic GaN Grown by Molecular Beam Epitaxy.”
Journal of Applied Physics, 095703, 2019, doi:10.1063/1.5066095.
short: M. Deppe, J.W. Gerlach, S. Shvarkov, D. Rogalla, H.-W. Becker, D. Reuter,
D.J. As, Journal of Applied Physics (2019).
date_created: 2019-03-26T12:48:57Z
date_updated: 2022-01-06T07:03:58Z
department:
- _id: '230'
- _id: '429'
doi: 10.1063/1.5066095
language:
- iso: eng
project:
- _id: '67'
name: TRR 142 - Subproject B2
publication: Journal of Applied Physics
publication_identifier:
issn:
- 0021-8979
- 1089-7550
publication_status: published
status: public
title: Germanium doping of cubic GaN grown by molecular beam epitaxy
type: journal_article
user_id: '14'
year: '2019'
...
---
_id: '22887'
author:
- first_name: J.
full_name: Vondran, J.
last_name: Vondran
- first_name: F.
full_name: Spitzer, F.
last_name: Spitzer
- first_name: M.
full_name: Bayer, M.
last_name: Bayer
- first_name: I. A.
full_name: Akimov, I. A.
last_name: Akimov
- first_name: Alexander
full_name: Trautmann, Alexander
id: '38163'
last_name: Trautmann
- first_name: Matthias
full_name: Reichelt, Matthias
id: '138'
last_name: Reichelt
- first_name: Cedrik
full_name: Meier, Cedrik
id: '20798'
last_name: Meier
orcid: https://orcid.org/0000-0002-3787-3572
- first_name: N.
full_name: Weber, N.
last_name: Weber
- first_name: Torsten
full_name: Meier, Torsten
id: '344'
last_name: Meier
orcid: 0000-0001-8864-2072
- first_name: R.
full_name: André, R.
last_name: André
- first_name: H.
full_name: Mariette, H.
last_name: Mariette
citation:
ama: Vondran J, Spitzer F, Bayer M, et al. Spatially asymmetric transients of propagating
exciton-polariton modes in a planar CdZnTe/CdMgTe guiding structure. Physical
Review B. 2019;100(15):155308. doi:10.1103/physrevb.100.155308
apa: Vondran, J., Spitzer, F., Bayer, M., Akimov, I. A., Trautmann, A., Reichelt,
M., Meier, C., Weber, N., Meier, T., André, R., & Mariette, H. (2019). Spatially
asymmetric transients of propagating exciton-polariton modes in a planar CdZnTe/CdMgTe
guiding structure. Physical Review B, 100(15), 155308. https://doi.org/10.1103/physrevb.100.155308
bibtex: '@article{Vondran_Spitzer_Bayer_Akimov_Trautmann_Reichelt_Meier_Weber_Meier_André_et
al._2019, title={Spatially asymmetric transients of propagating exciton-polariton
modes in a planar CdZnTe/CdMgTe guiding structure}, volume={100}, DOI={10.1103/physrevb.100.155308},
number={15}, journal={Physical Review B}, author={Vondran, J. and Spitzer, F.
and Bayer, M. and Akimov, I. A. and Trautmann, Alexander and Reichelt, Matthias
and Meier, Cedrik and Weber, N. and Meier, Torsten and André, R. and et al.},
year={2019}, pages={155308} }'
chicago: 'Vondran, J., F. Spitzer, M. Bayer, I. A. Akimov, Alexander Trautmann,
Matthias Reichelt, Cedrik Meier, et al. “Spatially Asymmetric Transients of Propagating
Exciton-Polariton Modes in a Planar CdZnTe/CdMgTe Guiding Structure.” Physical
Review B 100, no. 15 (2019): 155308. https://doi.org/10.1103/physrevb.100.155308.'
ieee: 'J. Vondran et al., “Spatially asymmetric transients of propagating
exciton-polariton modes in a planar CdZnTe/CdMgTe guiding structure,” Physical
Review B, vol. 100, no. 15, p. 155308, 2019, doi: 10.1103/physrevb.100.155308.'
mla: Vondran, J., et al. “Spatially Asymmetric Transients of Propagating Exciton-Polariton
Modes in a Planar CdZnTe/CdMgTe Guiding Structure.” Physical Review B,
vol. 100, no. 15, 2019, p. 155308, doi:10.1103/physrevb.100.155308.
short: J. Vondran, F. Spitzer, M. Bayer, I.A. Akimov, A. Trautmann, M. Reichelt,
C. Meier, N. Weber, T. Meier, R. André, H. Mariette, Physical Review B 100 (2019)
155308.
date_created: 2021-07-29T08:13:23Z
date_updated: 2023-04-21T11:30:46Z
department:
- _id: '15'
- _id: '170'
- _id: '293'
- _id: '429'
- _id: '230'
- _id: '35'
doi: 10.1103/physrevb.100.155308
intvolume: ' 100'
issue: '15'
language:
- iso: eng
page: '155308'
project:
- _id: '53'
name: TRR 142
- _id: '54'
name: TRR 142 - Project Area A
- _id: '56'
name: TRR 142 - Project Area C
- _id: '55'
name: TRR 142 - Project Area B
- _id: '59'
name: TRR 142 - Subproject A2
- _id: '67'
name: TRR 142 - Subproject B2
- _id: '68'
name: TRR 142 - Subproject B3
- _id: '62'
name: TRR 142 - Subproject A5
- _id: '71'
name: TRR 142 - Subproject C1
publication: Physical Review B
publication_identifier:
issn:
- 2469-9950
- 2469-9969
publication_status: published
status: public
title: Spatially asymmetric transients of propagating exciton-polariton modes in a
planar CdZnTe/CdMgTe guiding structure
type: journal_article
user_id: '16199'
volume: 100
year: '2019'
...
---
_id: '6533'
abstract:
- lang: eng
text: We propose and implement a new concept for thermochromic plasmonic elements.
It is based on vanadium dioxide (VO2) nanocrystals located in the near field of
surface plasmon polaritons supported by an otherwise unstructured gold thin film.
When the VO2 undergoes the metal-insulator phase transition, the coupling conditions
for conversion of light into propagating surface plasmon polaritons change markedly.
In particular, we realize thermochromic plasmonic grating couplers with substantial
switching contrast as well as tunable plasmonic couplers in a Kretschmann configuration.
The use of VO2 nanocrystals permits highly repetitive switching and room temperature
operation. Simulations based on the actual dielectric function of our VO2 nanocrystals
agree well with the experiment.
article_number: '17321'
author:
- first_name: Thorben
full_name: Jostmeier, Thorben
last_name: Jostmeier
- first_name: Moritz
full_name: Mangold, Moritz
last_name: Mangold
- first_name: Johannes
full_name: Zimmer, Johannes
last_name: Zimmer
- first_name: Helmut
full_name: Karl, Helmut
last_name: Karl
- first_name: Hubert J.
full_name: Krenner, Hubert J.
last_name: Krenner
- first_name: Claudia
full_name: Ruppert, Claudia
last_name: Ruppert
- first_name: Markus
full_name: Betz, Markus
last_name: Betz
citation:
ama: Jostmeier T, Mangold M, Zimmer J, et al. Thermochromic modulation of surface
plasmon polaritons in vanadium dioxide nanocomposites. Optics Express.
2016;24(15). doi:10.1364/oe.24.017321
apa: Jostmeier, T., Mangold, M., Zimmer, J., Karl, H., Krenner, H. J., Ruppert,
C., & Betz, M. (2016). Thermochromic modulation of surface plasmon polaritons
in vanadium dioxide nanocomposites. Optics Express, 24(15). https://doi.org/10.1364/oe.24.017321
bibtex: '@article{Jostmeier_Mangold_Zimmer_Karl_Krenner_Ruppert_Betz_2016, title={Thermochromic
modulation of surface plasmon polaritons in vanadium dioxide nanocomposites},
volume={24}, DOI={10.1364/oe.24.017321},
number={1517321}, journal={Optics Express}, publisher={The Optical Society}, author={Jostmeier,
Thorben and Mangold, Moritz and Zimmer, Johannes and Karl, Helmut and Krenner,
Hubert J. and Ruppert, Claudia and Betz, Markus}, year={2016} }'
chicago: Jostmeier, Thorben, Moritz Mangold, Johannes Zimmer, Helmut Karl, Hubert
J. Krenner, Claudia Ruppert, and Markus Betz. “Thermochromic Modulation of Surface
Plasmon Polaritons in Vanadium Dioxide Nanocomposites.” Optics Express
24, no. 15 (2016). https://doi.org/10.1364/oe.24.017321.
ieee: T. Jostmeier et al., “Thermochromic modulation of surface plasmon polaritons
in vanadium dioxide nanocomposites,” Optics Express, vol. 24, no. 15, 2016.
mla: Jostmeier, Thorben, et al. “Thermochromic Modulation of Surface Plasmon Polaritons
in Vanadium Dioxide Nanocomposites.” Optics Express, vol. 24, no. 15, 17321,
The Optical Society, 2016, doi:10.1364/oe.24.017321.
short: T. Jostmeier, M. Mangold, J. Zimmer, H. Karl, H.J. Krenner, C. Ruppert, M.
Betz, Optics Express 24 (2016).
date_created: 2019-01-09T09:34:56Z
date_updated: 2022-01-06T07:03:10Z
department:
- _id: '230'
doi: 10.1364/oe.24.017321
intvolume: ' 24'
issue: '15'
language:
- iso: eng
project:
- _id: '53'
name: TRR 142
- _id: '55'
name: TRR 142 - Project Area B
- _id: '67'
name: TRR 142 - Subproject B2
publication: Optics Express
publication_identifier:
issn:
- 1094-4087
publication_status: published
publisher: The Optical Society
status: public
title: Thermochromic modulation of surface plasmon polaritons in vanadium dioxide
nanocomposites
type: journal_article
user_id: '49428'
volume: 24
year: '2016'
...