---
OA_place: publisher
OA_type: hybrid
PlanS_conform: '1'
_id: '21469'
abstract:
- lang: eng
text: "Terahertz (THz) spectroscopy is a powerful probe of low-energy excitations
in complex materials. Extending it into the nonlinear regime broadens its scope
and can provide valuable insight into interactions among these modes. However,
interpreting nonlinear spectra is challenging because resonant features in this
case do not always reflect intrinsic material dynamics. Here, we study nonlinear
THz-induced Kerr effect in a generic material LaAlO3. After detailed analysis
of temporal oscillations of the Kerr signal, we identify an \U0001D438\U0001D454
Raman mode at 1.1 THz excited through a two-photon process, while two additional
peaks (0.86 and 0.36 THz) arise from phase matching of the near-infrared probe
beam with co- and counterpropagating THz pump fields, mediated by off-resonant
electronic hyperpolarizability. These results demonstrate the crucial role of
kinematic effects in shaping THz-induced Kerr response and establish a framework
for interpreting nonlinear spectroscopies in complex materials."
acknowledgement: Z. A. acknowledges support from the collaborative research project
SFB Q-M&S funded by the Austrian Science Fund (FWF, Grant No. PR1050F8602). S. F. M.
acknowledges support and funding from the Deutsche Forschungsgemeinschaft (DFG,
Grant No. 469405347).
article_number: '106901'
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Chao
full_name: Shen, Chao
id: f84c083e-dc8d-11ea-abe3-aaf3d822a8bb
last_name: Shen
- first_name: Maximilian
full_name: Frenzel, Maximilian
last_name: Frenzel
- first_name: Sebastian F.
full_name: Maehrlein, Sebastian F.
last_name: Maehrlein
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
citation:
ama: Shen C, Frenzel M, Maehrlein SF, Alpichshev Z. Disentangling electronic and
ionic nonlinear polarization effects in bulk THz Kerr response. Physical Review
Letters. 2026;136(10). doi:10.1103/1c5k-9z82
apa: Shen, C., Frenzel, M., Maehrlein, S. F., & Alpichshev, Z. (2026). Disentangling
electronic and ionic nonlinear polarization effects in bulk THz Kerr response.
Physical Review Letters. American Physical Society. https://doi.org/10.1103/1c5k-9z82
chicago: Shen, Chao, Maximilian Frenzel, Sebastian F. Maehrlein, and Zhanybek Alpichshev.
“Disentangling Electronic and Ionic Nonlinear Polarization Effects in Bulk THz
Kerr Response.” Physical Review Letters. American Physical Society, 2026.
https://doi.org/10.1103/1c5k-9z82.
ieee: C. Shen, M. Frenzel, S. F. Maehrlein, and Z. Alpichshev, “Disentangling electronic
and ionic nonlinear polarization effects in bulk THz Kerr response,” Physical
Review Letters, vol. 136, no. 10. American Physical Society, 2026.
ista: Shen C, Frenzel M, Maehrlein SF, Alpichshev Z. 2026. Disentangling electronic
and ionic nonlinear polarization effects in bulk THz Kerr response. Physical Review
Letters. 136(10), 106901.
mla: Shen, Chao, et al. “Disentangling Electronic and Ionic Nonlinear Polarization
Effects in Bulk THz Kerr Response.” Physical Review Letters, vol. 136,
no. 10, 106901, American Physical Society, 2026, doi:10.1103/1c5k-9z82.
short: C. Shen, M. Frenzel, S.F. Maehrlein, Z. Alpichshev, Physical Review Letters
136 (2026).
corr_author: '1'
date_created: 2026-03-22T23:04:31Z
date_published: 2026-03-13T00:00:00Z
date_updated: 2026-03-23T13:11:09Z
day: '13'
ddc:
- '530'
department:
- _id: ZhAl
- _id: GradSch
doi: 10.1103/1c5k-9z82
file:
- access_level: open_access
checksum: 712b05b4b0e0fbe9fd426a8c9d41ce20
content_type: application/pdf
creator: dernst
date_created: 2026-03-23T13:08:06Z
date_updated: 2026-03-23T13:08:06Z
file_id: '21475'
file_name: 2026_PhysicalReviewLetters_Shen.pdf
file_size: 1375532
relation: main_file
success: 1
file_date_updated: 2026-03-23T13:08:06Z
has_accepted_license: '1'
intvolume: ' 136'
issue: '10'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 34a97cc6-11ca-11ed-8bc3-9acbba792f33
grant_number: F8602
name: 'Center for Correlated Quantum Materials and Solid State Quantum Systems:
Nonlinear THz spectroscopy of quantum critical materials'
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Disentangling electronic and ionic nonlinear polarization effects in bulk THz
Kerr response
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 136
year: '2026'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
PlanS_conform: '1'
_id: '21382'
abstract:
- lang: eng
text: The exceptional energy-harvesting efficiency of lead-halide perovskites arises
from unusually long photocarrier diffusion lengths and recombination lifetimes
that persist even in defect-rich, solution-grown samples. Paradoxically, perovskites
are also known for having very short exciton decay times. Here, we resolve this
apparent contradiction by showing that key optoelectronic properties of perovskites
can be explained by localized flexoelectric polarization confined to interfaces
between domains of spontaneous strain. Using birefringence imaging, electrochemical
staining, and zero-bias photocurrent measurements, we visualize the domain structure
and directly probe the associated internal fields in nominally cubic single crystals
of methylammonium lead bromide. We demonstrate that localized flexoelectric fields
spatially separate electrons and holes to opposite sides of domain walls, exponentially
suppressing recombination. Domain walls thus act as efficient mesoscopic transport
channels for long-lived photocarriers, microscopically linking structural heterogeneity
to charge transport and offering mechanistically informed design principles for
perovskite solar-energy technologies.
acknowledged_ssus:
- _id: Bio
- _id: M-Shop
acknowledgement: We are grateful to A. G. Volosniev for the valuable discussions.
We thank D. Milius for the assistance with microscopy. D. R. would like to thank
F. Filakovský and T. Čuchráč for the valuable discussions. This research was supported
by the Scientific Service Units (SSU) of ISTA through resources provided by the
Imaging & Optics Facility (IOF) and the Miba Machine Shop Facility (MS).
article_number: '946'
article_processing_charge: Yes
article_type: original
author:
- first_name: Dmytro
full_name: Rak, Dmytro
id: 70313b46-47c2-11ec-9e88-cd79101918fe
last_name: Rak
- first_name: Dusan
full_name: Lorenc, Dusan
id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87
last_name: Lorenc
- first_name: Daniel
full_name: Balazs, Daniel
id: 302BADF6-85FC-11EA-9E3B-B9493DDC885E
last_name: Balazs
orcid: 0000-0001-7597-043X
- first_name: Ayan A.
full_name: Zhumekenov, Ayan A.
last_name: Zhumekenov
- first_name: Osman M.
full_name: Bakr, Osman M.
last_name: Bakr
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
citation:
ama: Rak D, Lorenc D, Balazs D, Zhumekenov AA, Bakr OM, Alpichshev Z. Flexoelectric
domain walls enable charge separation and transport in cubic perovskites. Nature
Communications. 2026;17. doi:10.1038/s41467-026-68660-5
apa: Rak, D., Lorenc, D., Balazs, D., Zhumekenov, A. A., Bakr, O. M., & Alpichshev,
Z. (2026). Flexoelectric domain walls enable charge separation and transport in
cubic perovskites. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-026-68660-5
chicago: Rak, Dmytro, Dusan Lorenc, Daniel Balazs, Ayan A. Zhumekenov, Osman M.
Bakr, and Zhanybek Alpichshev. “Flexoelectric Domain Walls Enable Charge Separation
and Transport in Cubic Perovskites.” Nature Communications. Springer Nature,
2026. https://doi.org/10.1038/s41467-026-68660-5.
ieee: D. Rak, D. Lorenc, D. Balazs, A. A. Zhumekenov, O. M. Bakr, and Z. Alpichshev,
“Flexoelectric domain walls enable charge separation and transport in cubic perovskites,”
Nature Communications, vol. 17. Springer Nature, 2026.
ista: Rak D, Lorenc D, Balazs D, Zhumekenov AA, Bakr OM, Alpichshev Z. 2026. Flexoelectric
domain walls enable charge separation and transport in cubic perovskites. Nature
Communications. 17, 946.
mla: Rak, Dmytro, et al. “Flexoelectric Domain Walls Enable Charge Separation and
Transport in Cubic Perovskites.” Nature Communications, vol. 17, 946, Springer
Nature, 2026, doi:10.1038/s41467-026-68660-5.
short: D. Rak, D. Lorenc, D. Balazs, A.A. Zhumekenov, O.M. Bakr, Z. Alpichshev,
Nature Communications 17 (2026).
corr_author: '1'
date_created: 2026-03-02T10:06:58Z
date_published: 2026-02-16T00:00:00Z
date_updated: 2026-04-28T12:12:46Z
day: '16'
ddc:
- '530'
department:
- _id: ZhAl
- _id: LifeSc
doi: 10.1038/s41467-026-68660-5
external_id:
pmid:
- '41698893'
file:
- access_level: open_access
checksum: dd7a98de892d0b5abefca7e290ca0f77
content_type: application/pdf
creator: dernst
date_created: 2026-03-02T14:27:56Z
date_updated: 2026-03-02T14:27:56Z
file_id: '21390'
file_name: 2026_NatureComm_Rak.pdf
file_size: 2570918
relation: main_file
success: 1
file_date_updated: 2026-03-02T14:27:56Z
has_accepted_license: '1'
intvolume: ' 17'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
pmid: 1
publication: Nature Communications
publication_identifier:
eissn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- description: News on ISTA website
relation: press_release
url: https://ista.ac.at/en/news/explaining-next-generation-solar-cells/
scopus_import: '1'
status: public
title: Flexoelectric domain walls enable charge separation and transport in cubic
perovskites
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 17
year: '2026'
...
---
OA_place: publisher
OA_type: hybrid
PlanS_conform: '1'
_id: '20405'
abstract:
- lang: eng
text: Dielectric breakdown of physical vacuum (Schwinger effect) is the textbook
demonstration of compatibility of Relativity and Quantum theory. Although observing
this effect is still practically unachievable, its analogue generalizations have
been shown to be more readily attainable. This paper demonstrates that a gapped
Dirac semiconductor, methylammonium lead-bromide perovskite (MAPbBr3), exhibits
analogue dynamic Schwinger effect. Tunneling ionization under deep subgap mid-infrared
irradiation leads to intense photoluminescence in the visible range, in full agreement
with quasi-adiabatic theory. In addition to revealing a gapped extended system
suitable for studying the analogue Schwinger effect, this observation holds great
potential for nonperturbative field sensing, i.e., sensing electric fields through
nonperturbative light-matter interactions. First, this paper illustrates this
by measuring the local deviation from the nominally cubic phase of a perovskite
single crystal, which can be interpreted in terms of frozen-in fields. Next, it
is shown that analogue dynamic Schwinger effect can be used for nonperturbative
amplification of nonparametric upconversion process in perovskites driven simultaneously
by multiple optical fields. This discovery demonstrates the potential for material
response beyond perturbation theory in the tunneling regime, offering extremely
sensitive light detection and amplification across an ultrabroad spectral range
not accessible by conventional devices.
acknowledged_ssus:
- _id: EM-Fac
acknowledgement: A.G.V. thanks Peter Balling for useful discussions. This research
was supported by the Scientific Service Units (SSU) of ISTA through resources provided
by the Electron Microscopy Facility (EMF), and by the Werner Siemens Foundation
(WSS) for financial support.
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Dusan
full_name: Lorenc, Dusan
id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87
last_name: Lorenc
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: Ayan A.
full_name: Zhumekenov, Ayan A.
last_name: Zhumekenov
- first_name: Seungho
full_name: Lee, Seungho
id: BB243B88-D767-11E9-B658-BC13E6697425
last_name: Lee
orcid: 0000-0002-6962-8598
- first_name: Maria
full_name: Ibáñez, Maria
id: 43C61214-F248-11E8-B48F-1D18A9856A87
last_name: Ibáñez
orcid: 0000-0001-5013-2843
- first_name: Osman M.
full_name: Bakr, Osman M.
last_name: Bakr
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
citation:
ama: Lorenc D, Volosniev A, Zhumekenov AA, et al. Observation of analogue dynamic
Schwinger effect and non-perturbative light sensing in lead halide perovskites.
ACS Photonics. 2025;12(9):5220-5230. doi:10.1021/acsphotonics.5c01360
apa: Lorenc, D., Volosniev, A., Zhumekenov, A. A., Lee, S., Ibáñez, M., Bakr, O.
M., … Alpichshev, Z. (2025). Observation of analogue dynamic Schwinger effect
and non-perturbative light sensing in lead halide perovskites. ACS Photonics.
American Chemical Society. https://doi.org/10.1021/acsphotonics.5c01360
chicago: Lorenc, Dusan, Artem Volosniev, Ayan A. Zhumekenov, Seungho Lee, Maria
Ibáñez, Osman M. Bakr, Mikhail Lemeshko, and Zhanybek Alpichshev. “Observation
of Analogue Dynamic Schwinger Effect and Non-Perturbative Light Sensing in Lead
Halide Perovskites.” ACS Photonics. American Chemical Society, 2025. https://doi.org/10.1021/acsphotonics.5c01360.
ieee: D. Lorenc et al., “Observation of analogue dynamic Schwinger effect
and non-perturbative light sensing in lead halide perovskites,” ACS Photonics,
vol. 12, no. 9. American Chemical Society, pp. 5220–5230, 2025.
ista: Lorenc D, Volosniev A, Zhumekenov AA, Lee S, Ibáñez M, Bakr OM, Lemeshko M,
Alpichshev Z. 2025. Observation of analogue dynamic Schwinger effect and non-perturbative
light sensing in lead halide perovskites. ACS Photonics. 12(9), 5220–5230.
mla: Lorenc, Dusan, et al. “Observation of Analogue Dynamic Schwinger Effect and
Non-Perturbative Light Sensing in Lead Halide Perovskites.” ACS Photonics,
vol. 12, no. 9, American Chemical Society, 2025, pp. 5220–30, doi:10.1021/acsphotonics.5c01360.
short: D. Lorenc, A. Volosniev, A.A. Zhumekenov, S. Lee, M. Ibáñez, O.M. Bakr, M.
Lemeshko, Z. Alpichshev, ACS Photonics 12 (2025) 5220–5230.
corr_author: '1'
date_created: 2025-09-28T22:01:26Z
date_published: 2025-08-11T00:00:00Z
date_updated: 2025-12-01T12:59:51Z
day: '11'
ddc:
- '540'
- '530'
department:
- _id: MaIb
- _id: MiLe
- _id: ZhAl
doi: 10.1021/acsphotonics.5c01360
external_id:
arxiv:
- '2406.05032'
isi:
- '001547359300001'
file:
- access_level: open_access
checksum: d42476279287a9a2f8aeafaef032f4a7
content_type: application/pdf
creator: dernst
date_created: 2025-10-20T11:02:21Z
date_updated: 2025-10-20T11:02:21Z
file_id: '20502'
file_name: 2025_ACSPhotonics_Lorenc.pdf
file_size: 6609950
relation: main_file
success: 1
file_date_updated: 2025-10-20T11:02:21Z
has_accepted_license: '1'
intvolume: ' 12'
isi: 1
issue: '9'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
page: 5220-5230
project:
- _id: 9B8F7476-BA93-11EA-9121-9846C619BF3A
name: 'HighTE: The Werner Siemens Laboratory for the High Throughput Discovery of
Semiconductors for Waste Heat Recovery'
publication: ACS Photonics
publication_identifier:
eissn:
- 2330-4022
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Observation of analogue dynamic Schwinger effect and non-perturbative light
sensing in lead halide perovskites
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 12
year: '2025'
...
---
OA_place: publisher
OA_type: hybrid
PlanS_conform: '1'
_id: '20705'
abstract:
- lang: eng
text: Optical tweezers are widely used as a highly sensitive tool to measure forces
on micron-scale particles. One such application is the measurement of the electric
charge of a particle, which can be done with high precision in liquids, air, or
vacuum. We experimentally investigate how the trapping laser itself can electrically
charge such a particle, in our case a ∼1 μm SiO2 sphere in air. We model the
charging mechanism as a two-photon process which reproduces the experimental data
with high fidelity.
acknowledged_ssus:
- _id: M-Shop
- _id: ScienComp
acknowledgement: We thank Todor Asenov and Abdulhamid Baghdadi for their outstanding
technical support and Dr. Michael Gleichweit and Mercede Azizbaig Mohajer for the
helpful discussions. This project has received funding from the European Research
Council (ERC) under the European Union’s Horizon 2020 research and innovation programme
(Grant Agreements No. 949120 and No. 805041) and the Swiss National Science Foundation
(SNSF, Project No. 200021-236446). This research was supported by the Scientific
Service Units of the Institute of Science and Technology Austria (ISTA) through
resources provided by the Miba Machine Shop and the Scientific Computing service
unit.
article_number: '218202'
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Andrea
full_name: Stöllner, Andrea
id: 4bdcf7f6-eb97-11eb-a6c2-9981bbdc3bed
last_name: Stöllner
orcid: 0000-0002-0464-8440
- first_name: Isaac C
full_name: Lenton, Isaac C
id: a550210f-223c-11ec-8182-e2d45e817efb
last_name: Lenton
orcid: 0000-0002-5010-6984
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: James
full_name: Millen, James
last_name: Millen
- first_name: Renjiro
full_name: Shibuya, Renjiro
last_name: Shibuya
- first_name: Hisao
full_name: Ishii, Hisao
last_name: Ishii
- first_name: Dmytro
full_name: Rak, Dmytro
id: 70313b46-47c2-11ec-9e88-cd79101918fe
last_name: Rak
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
- first_name: Grégory
full_name: David, Grégory
last_name: David
- first_name: Ruth
full_name: Signorell, Ruth
last_name: Signorell
- first_name: Caroline J
full_name: Muller, Caroline J
id: f978ccb0-3f7f-11eb-b193-b0e2bd13182b
last_name: Muller
orcid: 0000-0001-5836-5350
- first_name: Scott R
full_name: Waitukaitis, Scott R
id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87
last_name: Waitukaitis
orcid: 0000-0002-2299-3176
citation:
ama: Stöllner A, Lenton IC, Volosniev A, et al. Using optical tweezers to simultaneously
trap, charge, and measure the charge of a microparticle in air. Physical Review
Letters. 2025;135(21). doi:10.1103/5xd9-4tjj
apa: Stöllner, A., Lenton, I. C., Volosniev, A., Millen, J., Shibuya, R., Ishii,
H., … Waitukaitis, S. R. (2025). Using optical tweezers to simultaneously trap,
charge, and measure the charge of a microparticle in air. Physical Review Letters.
American Physical Society. https://doi.org/10.1103/5xd9-4tjj
chicago: Stöllner, Andrea, Isaac C Lenton, Artem Volosniev, James Millen, Renjiro
Shibuya, Hisao Ishii, Dmytro Rak, et al. “Using Optical Tweezers to Simultaneously
Trap, Charge, and Measure the Charge of a Microparticle in Air.” Physical Review
Letters. American Physical Society, 2025. https://doi.org/10.1103/5xd9-4tjj.
ieee: A. Stöllner et al., “Using optical tweezers to simultaneously trap,
charge, and measure the charge of a microparticle in air,” Physical Review
Letters, vol. 135, no. 21. American Physical Society, 2025.
ista: Stöllner A, Lenton IC, Volosniev A, Millen J, Shibuya R, Ishii H, Rak D, Alpichshev
Z, David G, Signorell R, Muller CJ, Waitukaitis SR. 2025. Using optical tweezers
to simultaneously trap, charge, and measure the charge of a microparticle in air.
Physical Review Letters. 135(21), 218202.
mla: Stöllner, Andrea, et al. “Using Optical Tweezers to Simultaneously Trap, Charge,
and Measure the Charge of a Microparticle in Air.” Physical Review Letters,
vol. 135, no. 21, 218202, American Physical Society, 2025, doi:10.1103/5xd9-4tjj.
short: A. Stöllner, I.C. Lenton, A. Volosniev, J. Millen, R. Shibuya, H. Ishii,
D. Rak, Z. Alpichshev, G. David, R. Signorell, C.J. Muller, S.R. Waitukaitis,
Physical Review Letters 135 (2025).
corr_author: '1'
date_created: 2025-11-30T23:02:07Z
date_published: 2025-11-21T00:00:00Z
date_updated: 2026-04-28T13:09:27Z
day: '21'
ddc:
- '530'
- '550'
department:
- _id: ZhAl
- _id: CaMu
- _id: ScWa
doi: 10.1103/5xd9-4tjj
ec_funded: 1
external_id:
arxiv:
- '2507.17591'
file:
- access_level: open_access
checksum: a5f76b1230cc7b039ecd0dbd6f99e775
content_type: application/pdf
creator: dernst
date_created: 2025-12-01T08:19:46Z
date_updated: 2025-12-01T08:19:46Z
file_id: '20717'
file_name: 2025_PhysReviewLetters_Stoellner.pdf
file_size: 1761373
relation: main_file
success: 1
file_date_updated: 2025-12-01T08:19:46Z
has_accepted_license: '1'
intvolume: ' 135'
issue: '21'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
project:
- _id: 0aa60e99-070f-11eb-9043-a6de6bdc3afa
call_identifier: H2020
grant_number: '949120'
name: 'Tribocharge: a multi-scale approach to an enduring problem in physics'
- _id: 629205d8-2b32-11ec-9570-e1356ff73576
call_identifier: H2020
grant_number: '805041'
name: Organization of CLoUdS, and implications of Tropical cyclones and for the
Energetics of the tropics, in current and waRming climate
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
link:
- description: News on ISTA website
relation: press_release
url: https://ista.ac.at/en/news/trapping-particles-to-explain-lightning/
scopus_import: '1'
status: public
title: Using optical tweezers to simultaneously trap, charge, and measure the charge
of a microparticle in air
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 135
year: '2025'
...
---
APC_amount: 3054 EUR
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '19531'
abstract:
- lang: eng
text: In standard quantum electrodynamics (QED), the so-called non-minimal (Pauli)
coupling is suppressed for elementary particles and has no physical implications.
Here, we show that the Pauli term naturally appears in a known family of Dirac
materials—the lead-halide perovskites, suggesting a novel playground for the study
of analog QED effects. We outline measurable manifestations of the Pauli term
in the phenomena pertaining to (i) relativistic corrections to bound states (ii)
the Klein paradox, and (iii) spin effects in scattering. In particular, we demonstrate
that (a) the binding energy of an electron in the vicinity of a positively charged
defect is noticeably decreased due to the polarizability of lead ions and the
appearance of a Darwin-like term, (b) strong spin-orbit coupling due to the Pauli
term affects the exciton states, and (c) scattering of an electron off an energy
barrier with broken mirror symmetry produces spin polarization in the outgoing
current. Our study adds to the understanding of quantum phenomena in lead-halide
perovskites and paves the way for tabletop simulations of analog Dirac-Pauli equations.
article_number: '37'
article_processing_charge: Yes
article_type: original
author:
- first_name: Abhishek
full_name: Shiva Kumar, Abhishek
id: 5e9a6931-eb97-11eb-a6c2-e96f7058d77a
last_name: Shiva Kumar
- first_name: Mikhail
full_name: Maslov, Mikhail
id: 2E65BB0E-F248-11E8-B48F-1D18A9856A87
last_name: Maslov
orcid: 0000-0003-4074-2570
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
citation:
ama: Shiva Kumar A, Maslov M, Lemeshko M, Volosniev A, Alpichshev Z. Massive Dirac-Pauli
physics in lead-halide perovskites. npj Quantum Materials. 2025;10. doi:10.1038/s41535-025-00754-7
apa: Shiva Kumar, A., Maslov, M., Lemeshko, M., Volosniev, A., & Alpichshev,
Z. (2025). Massive Dirac-Pauli physics in lead-halide perovskites. Npj Quantum
Materials. Springer Nature. https://doi.org/10.1038/s41535-025-00754-7
chicago: Shiva Kumar, Abhishek, Mikhail Maslov, Mikhail Lemeshko, Artem Volosniev,
and Zhanybek Alpichshev. “Massive Dirac-Pauli Physics in Lead-Halide Perovskites.”
Npj Quantum Materials. Springer Nature, 2025. https://doi.org/10.1038/s41535-025-00754-7.
ieee: A. Shiva Kumar, M. Maslov, M. Lemeshko, A. Volosniev, and Z. Alpichshev, “Massive
Dirac-Pauli physics in lead-halide perovskites,” npj Quantum Materials,
vol. 10. Springer Nature, 2025.
ista: Shiva Kumar A, Maslov M, Lemeshko M, Volosniev A, Alpichshev Z. 2025. Massive
Dirac-Pauli physics in lead-halide perovskites. npj Quantum Materials. 10, 37.
mla: Shiva Kumar, Abhishek, et al. “Massive Dirac-Pauli Physics in Lead-Halide Perovskites.”
Npj Quantum Materials, vol. 10, 37, Springer Nature, 2025, doi:10.1038/s41535-025-00754-7.
short: A. Shiva Kumar, M. Maslov, M. Lemeshko, A. Volosniev, Z. Alpichshev, Npj
Quantum Materials 10 (2025).
corr_author: '1'
date_created: 2025-04-08T18:13:06Z
date_published: 2025-04-04T00:00:00Z
date_updated: 2026-05-06T13:06:08Z
day: '04'
ddc:
- '530'
department:
- _id: GradSch
- _id: ZhAl
- _id: MiLe
doi: 10.1038/s41535-025-00754-7
external_id:
isi:
- '001459830100002'
file:
- access_level: open_access
checksum: 08b1a94b362bb65482887e50020810e5
content_type: application/pdf
creator: dernst
date_created: 2025-04-10T06:12:49Z
date_updated: 2025-04-10T06:12:49Z
file_id: '19536'
file_name: 2025_njpQuantumMaterials_Kumar.pdf
file_size: 592092
relation: main_file
success: 1
file_date_updated: 2025-04-10T06:12:49Z
has_accepted_license: '1'
intvolume: ' 10'
isi: 1
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/4.0/
month: '04'
oa: 1
oa_version: Published Version
project:
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
name: IST Austria Open Access Fund
publication: npj Quantum Materials
publication_identifier:
eissn:
- 2397-4648
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: software
url: https://git.ista.ac.at/mmaslov/dirac_pauli_LHP
scopus_import: '1'
status: public
title: Massive Dirac-Pauli physics in lead-halide perovskites
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 10
year: '2025'
...
---
APC_amount: 2982,14 EUR
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '14886'
abstract:
- lang: eng
text: It is a basic principle that an effect cannot come before the cause. Dispersive
relations that follow from this fundamental fact have proven to be an indispensable
tool in physics and engineering. They are most powerful in the domain of linear
response where they are known as Kramers-Kronig relations. However, when it comes
to nonlinear phenomena the implications of causality are much less explored, apart
from several notable exceptions. Here in this paper we demonstrate how to apply
the dispersive formalism to analyze the ultrafast nonlinear response in the context
of the paradigmatic nonlinear Kerr effect. We find that the requirement of causality
introduces a noticeable effect even under assumption that Kerr effect is mediated
by quasi-instantaneous off-resonant electronic hyperpolarizability. We confirm
this by experimentally measuring the time-resolved Kerr dynamics in GaAs by means
of a hybrid pump-probe Mach-Zehnder interferometer and demonstrate the presence
of an intrinsic lagging between amplitude and phase responses as predicted by
dispersive analysis. Our results describe a general property of the time-resolved
nonlinear processes thereby highlighting the importance of accounting for dispersive
effects in the nonlinear optical processes involving ultrashort pulses.
acknowledgement: The work was supported by the Institute of Science and Technology
Austria (ISTA). We thank Prof. John M. Dudley, Dr. Ugur Sezer, and Dr. Artem Volosniev
for valuable discussions.
article_number: '013042'
article_processing_charge: Yes
article_type: original
author:
- first_name: Dusan
full_name: Lorenc, Dusan
id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87
last_name: Lorenc
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
citation:
ama: 'Lorenc D, Alpichshev Z. Dispersive effects in ultrafast nonlinear phenomena:
The case of optical Kerr effect. Physical Review Research. 2024;6(1). doi:10.1103/PhysRevResearch.6.013042'
apa: 'Lorenc, D., & Alpichshev, Z. (2024). Dispersive effects in ultrafast nonlinear
phenomena: The case of optical Kerr effect. Physical Review Research. American
Physical Society. https://doi.org/10.1103/PhysRevResearch.6.013042'
chicago: 'Lorenc, Dusan, and Zhanybek Alpichshev. “Dispersive Effects in Ultrafast
Nonlinear Phenomena: The Case of Optical Kerr Effect.” Physical Review Research.
American Physical Society, 2024. https://doi.org/10.1103/PhysRevResearch.6.013042.'
ieee: 'D. Lorenc and Z. Alpichshev, “Dispersive effects in ultrafast nonlinear phenomena:
The case of optical Kerr effect,” Physical Review Research, vol. 6, no.
1. American Physical Society, 2024.'
ista: 'Lorenc D, Alpichshev Z. 2024. Dispersive effects in ultrafast nonlinear phenomena:
The case of optical Kerr effect. Physical Review Research. 6(1), 013042.'
mla: 'Lorenc, Dusan, and Zhanybek Alpichshev. “Dispersive Effects in Ultrafast Nonlinear
Phenomena: The Case of Optical Kerr Effect.” Physical Review Research,
vol. 6, no. 1, 013042, American Physical Society, 2024, doi:10.1103/PhysRevResearch.6.013042.'
short: D. Lorenc, Z. Alpichshev, Physical Review Research 6 (2024).
corr_author: '1'
date_created: 2024-01-28T23:01:42Z
date_published: 2024-01-11T00:00:00Z
date_updated: 2025-05-08T10:16:34Z
day: '11'
ddc:
- '530'
department:
- _id: ZhAl
doi: 10.1103/PhysRevResearch.6.013042
file:
- access_level: open_access
checksum: 42d58f93ae74e7f2c4de058ef75ff8b2
content_type: application/pdf
creator: dernst
date_created: 2024-01-31T11:59:30Z
date_updated: 2024-01-31T11:59:30Z
file_id: '14918'
file_name: 2024_PhysicalReviewResearch_Lorenc.pdf
file_size: 2863627
relation: main_file
success: 1
file_date_updated: 2024-01-31T11:59:30Z
has_accepted_license: '1'
intvolume: ' 6'
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
publication: Physical Review Research
publication_identifier:
eissn:
- 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Dispersive effects in ultrafast nonlinear phenomena: The case of optical Kerr
effect'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 6
year: '2024'
...
---
DOAJ_listed: '1'
_id: '15406'
abstract:
- lang: eng
text: 'We report on dynamic Shubnikov–de Haas (SdH) oscillations that are measured
in the optical response, subterahertz transmittance of two-dimensional systems,
and reveal two distinct types of oscillation nodes: “universal” nodes at integer
ratios of radiation and cyclotron frequencies and “tunable” nodes at positions
sensitive to all parameters of the structure. The nodes in both real and imaginary
parts of the measured complex transmittance are analyzed using a dynamic version
of the static Lifshitz-Kosevich formula. These results demonstrate that the node
structure of the dynamic SdH oscillations provides an all-optical access to quantization-
and interaction-induced renormalization effects, in addition to parameters one
can obtain from the static SdH oscillations.'
acknowledgement: This research was funded in whole or in part by the Austrian Science
Fund (FWF) [10.55776/I3456,10.55776/I5539]. I.A.D. acknowledges the financial support
of the German Research Foundation (DM 1/6-1). The quantum well growth and transport
measurements were supported by RSF 23-72-30003. For open access purposes, the authors
have applied a CC BY public copyright license to any authoraccepted manuscript version
arising from this submission.
article_number: L022027
article_processing_charge: Yes
article_type: letter_note
arxiv: 1
author:
- first_name: M. L.
full_name: Savchenko, M. L.
last_name: Savchenko
- first_name: J.
full_name: Gospodarič, J.
last_name: Gospodarič
- first_name: A.
full_name: Shuvaev, A.
last_name: Shuvaev
- first_name: I. A.
full_name: Dmitriev, I. A.
last_name: Dmitriev
- first_name: Vlad
full_name: Dziom, Vlad
id: 6A9A37C2-8C5C-11E9-AE53-F2FDE5697425
last_name: Dziom
orcid: 0000-0002-1648-0999
- first_name: A. A.
full_name: Dobretsova, A. A.
last_name: Dobretsova
- first_name: N. N.
full_name: Mikhailov, N. N.
last_name: Mikhailov
- first_name: Z. D.
full_name: Kvon, Z. D.
last_name: Kvon
- first_name: A.
full_name: Pimenov, A.
last_name: Pimenov
citation:
ama: Savchenko ML, Gospodarič J, Shuvaev A, et al. Optical Shubnikov-de Haas oscillations
in two-dimensional electron systems. Physical Review Research. 2024;6(2).
doi:10.1103/PhysRevResearch.6.L022027
apa: Savchenko, M. L., Gospodarič, J., Shuvaev, A., Dmitriev, I. A., Dziom, V.,
Dobretsova, A. A., … Pimenov, A. (2024). Optical Shubnikov-de Haas oscillations
in two-dimensional electron systems. Physical Review Research. American
Physical Society. https://doi.org/10.1103/PhysRevResearch.6.L022027
chicago: Savchenko, M. L., J. Gospodarič, A. Shuvaev, I. A. Dmitriev, Vlad Dziom,
A. A. Dobretsova, N. N. Mikhailov, Z. D. Kvon, and A. Pimenov. “Optical Shubnikov-de
Haas Oscillations in Two-Dimensional Electron Systems.” Physical Review Research.
American Physical Society, 2024. https://doi.org/10.1103/PhysRevResearch.6.L022027.
ieee: M. L. Savchenko et al., “Optical Shubnikov-de Haas oscillations in
two-dimensional electron systems,” Physical Review Research, vol. 6, no.
2. American Physical Society, 2024.
ista: Savchenko ML, Gospodarič J, Shuvaev A, Dmitriev IA, Dziom V, Dobretsova AA,
Mikhailov NN, Kvon ZD, Pimenov A. 2024. Optical Shubnikov-de Haas oscillations
in two-dimensional electron systems. Physical Review Research. 6(2), L022027.
mla: Savchenko, M. L., et al. “Optical Shubnikov-de Haas Oscillations in Two-Dimensional
Electron Systems.” Physical Review Research, vol. 6, no. 2, L022027, American
Physical Society, 2024, doi:10.1103/PhysRevResearch.6.L022027.
short: M.L. Savchenko, J. Gospodarič, A. Shuvaev, I.A. Dmitriev, V. Dziom, A.A.
Dobretsova, N.N. Mikhailov, Z.D. Kvon, A. Pimenov, Physical Review Research 6
(2024).
date_created: 2024-05-19T22:01:12Z
date_published: 2024-04-01T00:00:00Z
date_updated: 2025-05-14T09:31:15Z
day: '01'
ddc:
- '530'
department:
- _id: ZhAl
doi: 10.1103/PhysRevResearch.6.L022027
external_id:
arxiv:
- '2402.05879'
file:
- access_level: open_access
checksum: 78c8c3cf1bda766e3de0db45f143a367
content_type: application/pdf
creator: dernst
date_created: 2024-05-22T06:39:35Z
date_updated: 2024-05-22T06:39:35Z
file_id: '15412'
file_name: 2024_PhysicalReviewResearch_Savchenko.pdf
file_size: 1697856
relation: main_file
success: 1
file_date_updated: 2024-05-22T06:39:35Z
has_accepted_license: '1'
intvolume: ' 6'
issue: '2'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
publication: Physical Review Research
publication_identifier:
eissn:
- 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Optical Shubnikov-de Haas oscillations in two-dimensional electron systems
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 6
year: '2024'
...
---
_id: '17476'
abstract:
- lang: eng
text: "Lead halide perovskites have recently been reported to demonstrate an exceptionally
high nonlinear (Kerr) refractive index n2 of up to 10−8cm2/W in CH3NH3PbBr3.
Other researchers, however, observe different, substantially more conservative
numbers. In order to resolve this disagreement, the nonlinear Kerr index of a
bulk sample of lead halide perovskite was measured directly by means of an interferometer.
This approach has many advantages as compared to the more standard z-scan technique.
In particular, this method allows studying the induced changes to the refractive
index in a time-resolved manner, thus enabling to separate the different contributions
to \U0001D45B2. The extracted \U0001D45B2 values for CsPbBr3 and MAPbBr3 at \U0001D706≈1µm
are \U0001D45B2=+2.1×10−14cm2/W and \U0001D45B2=+6×10−15cm2/W, respectively. Hence,
these values are substantially lower than what has been indicated in most of the
previous reports, implying the latter one should be regarded with great care."
acknowledgement: "We gratefully acknowledge the assistance of Prof. John\r\nDudley."
article_number: '085403'
article_processing_charge: No
article_type: original
author:
- first_name: Dusan
full_name: Lorenc, Dusan
id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87
last_name: Lorenc
- first_name: Ayan
full_name: Zhumekenov, Ayan
last_name: Zhumekenov
- first_name: Osman M.
full_name: Bakr, Osman M.
last_name: Bakr
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
citation:
ama: 'Lorenc D, Zhumekenov A, Bakr OM, Alpichshev Z. No extraordinary χ(3) in lead-halide
perovskites: Placing an upper bound on Kerr nonlinearity by means of time-resolved
interferometry. Physical Review Materials. 2024;8(8). doi:10.1103/PhysRevMaterials.8.085403'
apa: 'Lorenc, D., Zhumekenov, A., Bakr, O. M., & Alpichshev, Z. (2024). No extraordinary
χ(3) in lead-halide perovskites: Placing an upper bound on Kerr nonlinearity by
means of time-resolved interferometry. Physical Review Materials. American
Physical Society. https://doi.org/10.1103/PhysRevMaterials.8.085403'
chicago: 'Lorenc, Dusan, Ayan Zhumekenov, Osman M. Bakr, and Zhanybek Alpichshev.
“No Extraordinary χ(3) in Lead-Halide Perovskites: Placing an Upper Bound on Kerr
Nonlinearity by Means of Time-Resolved Interferometry.” Physical Review Materials.
American Physical Society, 2024. https://doi.org/10.1103/PhysRevMaterials.8.085403.'
ieee: 'D. Lorenc, A. Zhumekenov, O. M. Bakr, and Z. Alpichshev, “No extraordinary
χ(3) in lead-halide perovskites: Placing an upper bound on Kerr nonlinearity by
means of time-resolved interferometry,” Physical Review Materials, vol.
8, no. 8. American Physical Society, 2024.'
ista: 'Lorenc D, Zhumekenov A, Bakr OM, Alpichshev Z. 2024. No extraordinary χ(3)
in lead-halide perovskites: Placing an upper bound on Kerr nonlinearity by means
of time-resolved interferometry. Physical Review Materials. 8(8), 085403.'
mla: 'Lorenc, Dusan, et al. “No Extraordinary χ(3) in Lead-Halide Perovskites: Placing
an Upper Bound on Kerr Nonlinearity by Means of Time-Resolved Interferometry.”
Physical Review Materials, vol. 8, no. 8, 085403, American Physical Society,
2024, doi:10.1103/PhysRevMaterials.8.085403.'
short: D. Lorenc, A. Zhumekenov, O.M. Bakr, Z. Alpichshev, Physical Review Materials
8 (2024).
corr_author: '1'
date_created: 2024-09-01T22:01:08Z
date_published: 2024-08-23T00:00:00Z
date_updated: 2025-09-08T09:06:34Z
day: '23'
department:
- _id: ZhAl
doi: 10.1103/PhysRevMaterials.8.085403
external_id:
isi:
- '001299497800001'
intvolume: ' 8'
isi: 1
issue: '8'
language:
- iso: eng
month: '08'
oa_version: None
publication: Physical Review Materials
publication_identifier:
eissn:
- 2475-9953
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'No extraordinary χ(3) in lead-halide perovskites: Placing an upper bound on
Kerr nonlinearity by means of time-resolved interferometry'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 8
year: '2024'
...
---
_id: '14342'
abstract:
- lang: eng
text: We propose a simple method to measure nonlinear Kerr refractive index in mid-infrared
frequency range that avoids using sophisticated infrared detectors. Our approach
is based on using a near-infrared probe beam which interacts with a mid-IR beam
via wavelength-non-degenerate cross-phase modulation (XPM). By carefully measuring
XPM-induced spectral modifications in the probe beam and comparing the experimental
data with simulation results, we extract the value for the non-degenerate Kerr
index. Finally, in order to obtain the value of degenerate mid-IR Kerr index,
we use the well-established two-band formalism of Sheik-Bahae et al., which is
shown to become particularly simple in the limit of low frequencies. The proposed
technique is complementary to the conventional techniques, such as z-scan, and
has the advantage of not requiring any mid-infrared detectors.
acknowledgement: The work was supported by IST Austria. The authors would like to
gratefully acknowledge the help and assistance of Professor John M. Dudley.
article_number: '091104'
article_processing_charge: Yes (in subscription journal)
article_type: original
arxiv: 1
author:
- first_name: Dusan
full_name: Lorenc, Dusan
id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87
last_name: Lorenc
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
citation:
ama: Lorenc D, Alpichshev Z. Mid-infrared Kerr index evaluation via cross-phase
modulation with a near-infrared probe beam. Applied Physics Letters. 2023;123(9).
doi:10.1063/5.0161713
apa: Lorenc, D., & Alpichshev, Z. (2023). Mid-infrared Kerr index evaluation
via cross-phase modulation with a near-infrared probe beam. Applied Physics
Letters. AIP Publishing. https://doi.org/10.1063/5.0161713
chicago: Lorenc, Dusan, and Zhanybek Alpichshev. “Mid-Infrared Kerr Index Evaluation
via Cross-Phase Modulation with a near-Infrared Probe Beam.” Applied Physics
Letters. AIP Publishing, 2023. https://doi.org/10.1063/5.0161713.
ieee: D. Lorenc and Z. Alpichshev, “Mid-infrared Kerr index evaluation via cross-phase
modulation with a near-infrared probe beam,” Applied Physics Letters, vol.
123, no. 9. AIP Publishing, 2023.
ista: Lorenc D, Alpichshev Z. 2023. Mid-infrared Kerr index evaluation via cross-phase
modulation with a near-infrared probe beam. Applied Physics Letters. 123(9), 091104.
mla: Lorenc, Dusan, and Zhanybek Alpichshev. “Mid-Infrared Kerr Index Evaluation
via Cross-Phase Modulation with a near-Infrared Probe Beam.” Applied Physics
Letters, vol. 123, no. 9, 091104, AIP Publishing, 2023, doi:10.1063/5.0161713.
short: D. Lorenc, Z. Alpichshev, Applied Physics Letters 123 (2023).
corr_author: '1'
date_created: 2023-09-17T22:01:09Z
date_published: 2023-08-28T00:00:00Z
date_updated: 2025-09-09T12:58:23Z
day: '28'
ddc:
- '530'
department:
- _id: ZhAl
doi: 10.1063/5.0161713
external_id:
arxiv:
- '2306.09043'
isi:
- '001145465400004'
file:
- access_level: open_access
checksum: 89a1b604d58b209fec66c6b6f919ac98
content_type: application/pdf
creator: dernst
date_created: 2023-09-20T11:36:16Z
date_updated: 2023-09-20T11:36:16Z
file_id: '14353'
file_name: 2023_ApplPhysLetter_Lorenc.pdf
file_size: 1486715
relation: main_file
success: 1
file_date_updated: 2023-09-20T11:36:16Z
has_accepted_license: '1'
intvolume: ' 123'
isi: 1
issue: '9'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
publication: Applied Physics Letters
publication_identifier:
issn:
- 0003-6951
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Mid-infrared Kerr index evaluation via cross-phase modulation with a near-infrared
probe beam
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 123
year: '2023'
...
---
_id: '12723'
abstract:
- lang: eng
text: 'Lead halide perovskites enjoy a number of remarkable optoelectronic properties.
To explain their origin, it is necessary to study how electromagnetic fields interact
with these systems. We address this problem here by studying two classical quantities:
Faraday rotation and the complex refractive index in a paradigmatic perovskite
CH3NH3PbBr3 in a broad wavelength range. We find that the minimal coupling of
electromagnetic fields to the k⋅p Hamiltonian is insufficient to describe the
observed data even on the qualitative level. To amend this, we demonstrate that
there exists a relevant atomic-level coupling between electromagnetic fields and
the spin degree of freedom. This spin-electric coupling allows for quantitative
description of a number of previous as well as present experimental data. In particular,
we use it here to show that the Faraday effect in lead halide perovskites is dominated
by the Zeeman splitting of the energy levels and has a substantial beyond-Becquerel
contribution. Finally, we present general symmetry-based phenomenological arguments
that in the low-energy limit our effective model includes all basis coupling terms
to the electromagnetic field in the linear order.'
article_number: '106901'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: Abhishek
full_name: Shiva Kumar, Abhishek
id: 5e9a6931-eb97-11eb-a6c2-e96f7058d77a
last_name: Shiva Kumar
- first_name: Dusan
full_name: Lorenc, Dusan
id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87
last_name: Lorenc
- first_name: Younes
full_name: Ashourishokri, Younes
id: e32c111f-f6e0-11ea-865d-eb955baea334
last_name: Ashourishokri
- first_name: Ayan A.
full_name: Zhumekenov, Ayan A.
last_name: Zhumekenov
- first_name: Osman M.
full_name: Bakr, Osman M.
last_name: Bakr
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
citation:
ama: Volosniev A, Shiva Kumar A, Lorenc D, et al. Spin-electric coupling in lead
halide perovskites. Physical Review Letters. 2023;130(10). doi:10.1103/physrevlett.130.106901
apa: Volosniev, A., Shiva Kumar, A., Lorenc, D., Ashourishokri, Y., Zhumekenov,
A. A., Bakr, O. M., … Alpichshev, Z. (2023). Spin-electric coupling in lead halide
perovskites. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.130.106901
chicago: Volosniev, Artem, Abhishek Shiva Kumar, Dusan Lorenc, Younes Ashourishokri,
Ayan A. Zhumekenov, Osman M. Bakr, Mikhail Lemeshko, and Zhanybek Alpichshev.
“Spin-Electric Coupling in Lead Halide Perovskites.” Physical Review Letters.
American Physical Society, 2023. https://doi.org/10.1103/physrevlett.130.106901.
ieee: A. Volosniev et al., “Spin-electric coupling in lead halide perovskites,”
Physical Review Letters, vol. 130, no. 10. American Physical Society, 2023.
ista: Volosniev A, Shiva Kumar A, Lorenc D, Ashourishokri Y, Zhumekenov AA, Bakr
OM, Lemeshko M, Alpichshev Z. 2023. Spin-electric coupling in lead halide perovskites.
Physical Review Letters. 130(10), 106901.
mla: Volosniev, Artem, et al. “Spin-Electric Coupling in Lead Halide Perovskites.”
Physical Review Letters, vol. 130, no. 10, 106901, American Physical Society,
2023, doi:10.1103/physrevlett.130.106901.
short: A. Volosniev, A. Shiva Kumar, D. Lorenc, Y. Ashourishokri, A.A. Zhumekenov,
O.M. Bakr, M. Lemeshko, Z. Alpichshev, Physical Review Letters 130 (2023).
corr_author: '1'
date_created: 2023-03-14T13:11:59Z
date_published: 2023-03-10T00:00:00Z
date_updated: 2025-04-23T08:53:33Z
day: '10'
department:
- _id: GradSch
- _id: ZhAl
- _id: MiLe
doi: 10.1103/physrevlett.130.106901
external_id:
arxiv:
- '2203.09443'
isi:
- '000982435900002'
pmid:
- '36962044'
intvolume: ' 130'
isi: 1
issue: '10'
keyword:
- General Physics and Astronomy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2203.09443
month: '03'
oa: 1
oa_version: Preprint
pmid: 1
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Spin-electric coupling in lead halide perovskites
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 130
year: '2023'
...
---
_id: '12724'
abstract:
- lang: eng
text: 'We use general symmetry-based arguments to construct an effective model suitable
for studying optical properties of lead halide perovskites. To build the model,
we identify an atomic-level interaction between electromagnetic fields and the
spin degree of freedom that should be added to a minimally coupled k⋅p Hamiltonian.
As a first application, we study two basic optical characteristics of the material:
the Verdet constant and the refractive index. Beyond these linear characteristics
of the material, the model is suitable for calculating nonlinear effects such
as the third-order optical susceptibility. Analysis of this quantity shows that
the geometrical properties of the spin-electric term imply isotropic optical response
of the system, and that optical anisotropy of lead halide perovskites is a manifestation
of hopping of charge carriers. To illustrate this, we discuss third-harmonic generation.'
article_number: '125201'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: Abhishek
full_name: Shiva Kumar, Abhishek
id: 5e9a6931-eb97-11eb-a6c2-e96f7058d77a
last_name: Shiva Kumar
- first_name: Dusan
full_name: Lorenc, Dusan
id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87
last_name: Lorenc
- first_name: Younes
full_name: Ashourishokri, Younes
id: e32c111f-f6e0-11ea-865d-eb955baea334
last_name: Ashourishokri
- first_name: Ayan
full_name: Zhumekenov, Ayan
last_name: Zhumekenov
- first_name: Osman M.
full_name: Bakr, Osman M.
last_name: Bakr
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
citation:
ama: Volosniev A, Shiva Kumar A, Lorenc D, et al. Effective model for studying optical
properties of lead halide perovskites. Physical Review B. 2023;107(12).
doi:10.1103/physrevb.107.125201
apa: Volosniev, A., Shiva Kumar, A., Lorenc, D., Ashourishokri, Y., Zhumekenov,
A., Bakr, O. M., … Alpichshev, Z. (2023). Effective model for studying optical
properties of lead halide perovskites. Physical Review B. American Physical
Society. https://doi.org/10.1103/physrevb.107.125201
chicago: Volosniev, Artem, Abhishek Shiva Kumar, Dusan Lorenc, Younes Ashourishokri,
Ayan Zhumekenov, Osman M. Bakr, Mikhail Lemeshko, and Zhanybek Alpichshev. “Effective
Model for Studying Optical Properties of Lead Halide Perovskites.” Physical
Review B. American Physical Society, 2023. https://doi.org/10.1103/physrevb.107.125201.
ieee: A. Volosniev et al., “Effective model for studying optical properties
of lead halide perovskites,” Physical Review B, vol. 107, no. 12. American
Physical Society, 2023.
ista: Volosniev A, Shiva Kumar A, Lorenc D, Ashourishokri Y, Zhumekenov A, Bakr
OM, Lemeshko M, Alpichshev Z. 2023. Effective model for studying optical properties
of lead halide perovskites. Physical Review B. 107(12), 125201.
mla: Volosniev, Artem, et al. “Effective Model for Studying Optical Properties of
Lead Halide Perovskites.” Physical Review B, vol. 107, no. 12, 125201,
American Physical Society, 2023, doi:10.1103/physrevb.107.125201.
short: A. Volosniev, A. Shiva Kumar, D. Lorenc, Y. Ashourishokri, A. Zhumekenov,
O.M. Bakr, M. Lemeshko, Z. Alpichshev, Physical Review B 107 (2023).
corr_author: '1'
date_created: 2023-03-14T13:13:05Z
date_published: 2023-03-15T00:00:00Z
date_updated: 2024-10-09T21:04:46Z
day: '15'
department:
- _id: GradSch
- _id: ZhAl
- _id: MiLe
doi: 10.1103/physrevb.107.125201
external_id:
arxiv:
- '2204.04022'
isi:
- '000972602200006'
intvolume: ' 107'
isi: 1
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2204.04022
month: '03'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Effective model for studying optical properties of lead halide perovskites
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 107
year: '2023'
...
---
_id: '13251'
abstract:
- lang: eng
text: A rotating organic cation and a dynamically disordered soft inorganic cage
are the hallmark features of organic-inorganic lead-halide perovskites. Understanding
the interplay between these two subsystems is a challenging problem, but it is
this coupling that is widely conjectured to be responsible for the unique behavior
of photocarriers in these materials. In this work, we use the fact that the polarizability
of the organic cation strongly depends on the ambient electrostatic environment
to put the molecule forward as a sensitive probe of the local crystal fields inside
the lattice cell. We measure the average polarizability of the C/N–H bond stretching
mode by means of infrared spectroscopy, which allows us to deduce the character
of the motion of the cation molecule, find the magnitude of the local crystal
field, and place an estimate on the strength of the hydrogen bond between the
hydrogen and halide atoms. Our results pave the way for understanding electric
fields in lead-halide perovskites using infrared bond spectroscopy.
acknowledgement: "We thank Bingqing Cheng and Hong-Zhou Ye for valuable discussions;
Y.W.’s work at IST Austria was supported through ISTernship summer internship program
funded by OeADGmbH; D.L. and Z.A. acknowledge support by IST Austria (ISTA); M.L.
acknowledges support by the European Research Council (ERC) Starting Grant No. 801770
(ANGULON).\r\nA.A.Z. and O.M.B. acknowledge support by KAUST."
article_processing_charge: Yes (via OA deal)
article_type: original
arxiv: 1
author:
- first_name: Yujing
full_name: Wei, Yujing
id: 0c5ff007-2600-11ee-b896-98bd8d663294
last_name: Wei
orcid: 0000-0001-8913-9719
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: Dusan
full_name: Lorenc, Dusan
id: 40D8A3E6-F248-11E8-B48F-1D18A9856A87
last_name: Lorenc
- first_name: Ayan A.
full_name: Zhumekenov, Ayan A.
last_name: Zhumekenov
- first_name: Osman M.
full_name: Bakr, Osman M.
last_name: Bakr
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
citation:
ama: Wei Y, Volosniev A, Lorenc D, et al. Bond polarizability as a probe of local
crystal fields in hybrid lead-halide perovskites. The Journal of Physical Chemistry
Letters. 2023;14(27):6309-6314. doi:10.1021/acs.jpclett.3c01158
apa: Wei, Y., Volosniev, A., Lorenc, D., Zhumekenov, A. A., Bakr, O. M., Lemeshko,
M., & Alpichshev, Z. (2023). Bond polarizability as a probe of local crystal
fields in hybrid lead-halide perovskites. The Journal of Physical Chemistry
Letters. American Chemical Society. https://doi.org/10.1021/acs.jpclett.3c01158
chicago: Wei, Yujing, Artem Volosniev, Dusan Lorenc, Ayan A. Zhumekenov, Osman M.
Bakr, Mikhail Lemeshko, and Zhanybek Alpichshev. “Bond Polarizability as a Probe
of Local Crystal Fields in Hybrid Lead-Halide Perovskites.” The Journal of
Physical Chemistry Letters. American Chemical Society, 2023. https://doi.org/10.1021/acs.jpclett.3c01158.
ieee: Y. Wei et al., “Bond polarizability as a probe of local crystal fields
in hybrid lead-halide perovskites,” The Journal of Physical Chemistry Letters,
vol. 14, no. 27. American Chemical Society, pp. 6309–6314, 2023.
ista: Wei Y, Volosniev A, Lorenc D, Zhumekenov AA, Bakr OM, Lemeshko M, Alpichshev
Z. 2023. Bond polarizability as a probe of local crystal fields in hybrid lead-halide
perovskites. The Journal of Physical Chemistry Letters. 14(27), 6309–6314.
mla: Wei, Yujing, et al. “Bond Polarizability as a Probe of Local Crystal Fields
in Hybrid Lead-Halide Perovskites.” The Journal of Physical Chemistry Letters,
vol. 14, no. 27, American Chemical Society, 2023, pp. 6309–14, doi:10.1021/acs.jpclett.3c01158.
short: Y. Wei, A. Volosniev, D. Lorenc, A.A. Zhumekenov, O.M. Bakr, M. Lemeshko,
Z. Alpichshev, The Journal of Physical Chemistry Letters 14 (2023) 6309–6314.
corr_author: '1'
date_created: 2023-07-18T11:13:17Z
date_published: 2023-07-05T00:00:00Z
date_updated: 2025-04-23T13:01:50Z
day: '05'
ddc:
- '530'
department:
- _id: MiLe
- _id: ZhAl
doi: 10.1021/acs.jpclett.3c01158
ec_funded: 1
external_id:
arxiv:
- '2304.14198'
isi:
- '001022811500001'
pmid:
- '37405449'
file:
- access_level: open_access
checksum: c0c040063f06a51b9c463adc504f1a23
content_type: application/pdf
creator: dernst
date_created: 2023-07-19T06:55:39Z
date_updated: 2023-07-19T06:55:39Z
file_id: '13253'
file_name: 2023_JourPhysChemistry_Wei.pdf
file_size: 2121252
relation: main_file
success: 1
file_date_updated: 2023-07-19T06:55:39Z
has_accepted_license: '1'
intvolume: ' 14'
isi: 1
issue: '27'
keyword:
- General Materials Science
- Physical and Theoretical Chemistry
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 6309-6314
pmid: 1
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: The Journal of Physical Chemistry Letters
publication_identifier:
eissn:
- 1948-7185
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Bond polarizability as a probe of local crystal fields in hybrid lead-halide
perovskites
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 14
year: '2023'
...
---
_id: '11737'
abstract:
- lang: eng
text: Spin-orbit coupling in thin HgTe quantum wells results in a relativistic-like
electron band structure, making it a versatile solid state platform to observe
and control nontrivial electrodynamic phenomena. Here we report an observation
of universal terahertz (THz) transparency determined by fine-structure constant
α≈1/137 in 6.5-nm-thick HgTe layer, close to the critical thickness separating
phases with topologically different electronic band structure. Using THz spectroscopy
in a magnetic field we obtain direct evidence of asymmetric spin splitting of
the Dirac cone. This particle-hole asymmetry facilitates optical control of edge
spin currents in the quantum wells.
acknowledgement: This work was supported by the Austrian Science Funds (W 1243, I
3456-N27, I 5539-N).
article_number: '045302'
article_processing_charge: No
article_type: original
author:
- first_name: Uladzislau
full_name: Dziom, Uladzislau
id: 6A9A37C2-8C5C-11E9-AE53-F2FDE5697425
last_name: Dziom
orcid: 0000-0002-1648-0999
- first_name: A.
full_name: Shuvaev, A.
last_name: Shuvaev
- first_name: J.
full_name: Gospodarič, J.
last_name: Gospodarič
- first_name: E. G.
full_name: Novik, E. G.
last_name: Novik
- first_name: A. A.
full_name: Dobretsova, A. A.
last_name: Dobretsova
- first_name: N. N.
full_name: Mikhailov, N. N.
last_name: Mikhailov
- first_name: Z. D.
full_name: Kvon, Z. D.
last_name: Kvon
- first_name: Zhanybek
full_name: Alpichshev, Zhanybek
id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
last_name: Alpichshev
orcid: 0000-0002-7183-5203
- first_name: A.
full_name: Pimenov, A.
last_name: Pimenov
citation:
ama: Dziom U, Shuvaev A, Gospodarič J, et al. Universal transparency and asymmetric
spin splitting near the Dirac point in HgTe quantum wells. Physical Review
B. 2022;106(4). doi:10.1103/PhysRevB.106.045302
apa: Dziom, U., Shuvaev, A., Gospodarič, J., Novik, E. G., Dobretsova, A. A., Mikhailov,
N. N., … Pimenov, A. (2022). Universal transparency and asymmetric spin splitting
near the Dirac point in HgTe quantum wells. Physical Review B. American
Physical Society. https://doi.org/10.1103/PhysRevB.106.045302
chicago: Dziom, Uladzislau, A. Shuvaev, J. Gospodarič, E. G. Novik, A. A. Dobretsova,
N. N. Mikhailov, Z. D. Kvon, Zhanybek Alpichshev, and A. Pimenov. “Universal Transparency
and Asymmetric Spin Splitting near the Dirac Point in HgTe Quantum Wells.” Physical
Review B. American Physical Society, 2022. https://doi.org/10.1103/PhysRevB.106.045302.
ieee: U. Dziom et al., “Universal transparency and asymmetric spin splitting
near the Dirac point in HgTe quantum wells,” Physical Review B, vol. 106,
no. 4. American Physical Society, 2022.
ista: Dziom U, Shuvaev A, Gospodarič J, Novik EG, Dobretsova AA, Mikhailov NN, Kvon
ZD, Alpichshev Z, Pimenov A. 2022. Universal transparency and asymmetric spin
splitting near the Dirac point in HgTe quantum wells. Physical Review B. 106(4),
045302.
mla: Dziom, Uladzislau, et al. “Universal Transparency and Asymmetric Spin Splitting
near the Dirac Point in HgTe Quantum Wells.” Physical Review B, vol. 106,
no. 4, 045302, American Physical Society, 2022, doi:10.1103/PhysRevB.106.045302.
short: U. Dziom, A. Shuvaev, J. Gospodarič, E.G. Novik, A.A. Dobretsova, N.N. Mikhailov,
Z.D. Kvon, Z. Alpichshev, A. Pimenov, Physical Review B 106 (2022).
date_created: 2022-08-07T22:01:58Z
date_published: 2022-07-15T00:00:00Z
date_updated: 2023-08-03T12:38:57Z
day: '15'
ddc:
- '530'
department:
- _id: ZhAl
doi: 10.1103/PhysRevB.106.045302
external_id:
isi:
- '000834349200010'
file:
- access_level: open_access
checksum: 115aff9e0cde2f806cb26953d7262791
content_type: application/pdf
creator: dernst
date_created: 2022-08-08T06:58:22Z
date_updated: 2022-08-08T06:58:22Z
file_id: '11743'
file_name: 2022_PhysRevB_Dziom.pdf
file_size: 774455
relation: main_file
success: 1
file_date_updated: 2022-08-08T06:58:22Z
has_accepted_license: '1'
intvolume: ' 106'
isi: 1
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Universal transparency and asymmetric spin splitting near the Dirac point in
HgTe quantum wells
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 106
year: '2022'
...
---
_id: '12278'
abstract:
- lang: eng
text: Mercury telluride (HgTe) thin films with a critical thickness of 6.5 nm are
predicted to possess a gapless Dirac-like band structure. We report a comprehensive
study on gated and optically doped samples by magnetooptical spectroscopy in the
THz range. The quasi-classical analysis of the cyclotron resonance allowed the
mapping of the band dispersion of Dirac charge carriers in a broad range of electron
and hole doping. A smooth transition through the charge neutrality point between
Dirac holes and electrons was observed. An additional peak coming from a second
type of holes with an almost density-independent mass of around 0.04m0 was detected
in the hole-doping range and attributed to an asymmetric spin splitting of the
Dirac cone. Spectroscopic evidence for disorder-induced band energy fluctuations
could not be detected in present cyclotron resonance experiments.
acknowledgement: "This work was supported by the Austrian Science Funds (W1243, I
3456-N27, I 5539-N).\r\nOpen Access Funding by the Austrian Science Fund (FWF)."
article_number: '2492'
article_processing_charge: Yes
article_type: original
author:
- first_name: Alexey
full_name: Shuvaev, Alexey
last_name: Shuvaev
- first_name: Uladzislau
full_name: Dziom, Uladzislau
id: 6A9A37C2-8C5C-11E9-AE53-F2FDE5697425
last_name: Dziom
orcid: 0000-0002-1648-0999
- first_name: Jan
full_name: Gospodarič, Jan
last_name: Gospodarič
- first_name: Elena G.
full_name: Novik, Elena G.
last_name: Novik
- first_name: Alena A.
full_name: Dobretsova, Alena A.
last_name: Dobretsova
- first_name: Nikolay N.
full_name: Mikhailov, Nikolay N.
last_name: Mikhailov
- first_name: Ze Don
full_name: Kvon, Ze Don
last_name: Kvon
- first_name: Andrei
full_name: Pimenov, Andrei
last_name: Pimenov
citation:
ama: Shuvaev A, Dziom V, Gospodarič J, et al. Band structure near the Dirac Point
in HgTe quantum wells with critical thickness. Nanomaterials. 2022;12(14).
doi:10.3390/nano12142492
apa: Shuvaev, A., Dziom, V., Gospodarič, J., Novik, E. G., Dobretsova, A. A., Mikhailov,
N. N., … Pimenov, A. (2022). Band structure near the Dirac Point in HgTe quantum
wells with critical thickness. Nanomaterials. MDPI. https://doi.org/10.3390/nano12142492
chicago: Shuvaev, Alexey, Vlad Dziom, Jan Gospodarič, Elena G. Novik, Alena A. Dobretsova,
Nikolay N. Mikhailov, Ze Don Kvon, and Andrei Pimenov. “Band Structure near the
Dirac Point in HgTe Quantum Wells with Critical Thickness.” Nanomaterials.
MDPI, 2022. https://doi.org/10.3390/nano12142492.
ieee: A. Shuvaev et al., “Band structure near the Dirac Point in HgTe quantum
wells with critical thickness,” Nanomaterials, vol. 12, no. 14. MDPI, 2022.
ista: Shuvaev A, Dziom V, Gospodarič J, Novik EG, Dobretsova AA, Mikhailov NN, Kvon
ZD, Pimenov A. 2022. Band structure near the Dirac Point in HgTe quantum wells
with critical thickness. Nanomaterials. 12(14), 2492.
mla: Shuvaev, Alexey, et al. “Band Structure near the Dirac Point in HgTe Quantum
Wells with Critical Thickness.” Nanomaterials, vol. 12, no. 14, 2492, MDPI,
2022, doi:10.3390/nano12142492.
short: A. Shuvaev, V. Dziom, J. Gospodarič, E.G. Novik, A.A. Dobretsova, N.N. Mikhailov,
Z.D. Kvon, A. Pimenov, Nanomaterials 12 (2022).
date_created: 2023-01-16T10:02:31Z
date_published: 2022-07-20T00:00:00Z
date_updated: 2025-06-11T13:45:36Z
day: '20'
ddc:
- '530'
department:
- _id: ZhAl
doi: 10.3390/nano12142492
external_id:
isi:
- '000834401600001'
pmid:
- '35889716'
file:
- access_level: open_access
checksum: efad6742f89f39a18bec63116dd689a0
content_type: application/pdf
creator: dernst
date_created: 2023-01-30T11:16:54Z
date_updated: 2023-01-30T11:16:54Z
file_id: '12459'
file_name: 2022_Nanomaterials_Shuvaev.pdf
file_size: 464840
relation: main_file
success: 1
file_date_updated: 2023-01-30T11:16:54Z
has_accepted_license: '1'
intvolume: ' 12'
isi: 1
issue: '14'
keyword:
- General Materials Science
- General Chemical Engineering
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
pmid: 1
publication: Nanomaterials
publication_identifier:
issn:
- 2079-4991
publication_status: published
publisher: MDPI
quality_controlled: '1'
scopus_import: '1'
status: public
title: Band structure near the Dirac Point in HgTe quantum wells with critical thickness
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 12
year: '2022'
...