---
OA_place: repository
OA_type: green
_id: '21438'
abstract:
- lang: eng
text: Antiferromagnets (AFMs) hold promise for applications in digital logic. However,
switching AFM domains is challenging, as magnetic fields do not couple to the
bulk antiferromagnetic order parameter. Here we show that magnetic-field-driven
switching of AFM domains can in many cases be enabled by a generic reduction of
magnetic exchange at surfaces. We use statistical mechanics and Monte Carlo simulations
to demonstrate that an inequivalence in magnetic exchange between top and bottom
surface moments, combined with the enhanced magnetic susceptibility of surface
spins, can enable deterministic selection of antiferromagnetic domains depending
on the magnetic-field ramping direction. We further show that this mechanism provides
a natural interpretation for experimental observations of hysteresis in magneto-optical
response of the van der Waals AFM $\mathrm{MnBi_2Te_4}$. Our findings highlight
the critical role of surface spins in responses of antiferromagnets to magnetic
fields. Furthermore, our results suggest that antiferromagnetic domain selection
via purely magnetic means may be a more common and experimentally accessible phenomenon
than previously assumed.
acknowledgement: SFW acknowledges funding from Chalmers University of Technology through
the department of Physics and the Areas of Advance Nano and Materials Science. VS
acknowledges funding from Institute of Science and Technology Austria. Monte Carlo
simulations were performed using computing resources from the PDC Center for High
Performance Computing. These resources were granted by the National Academic Infrastructure
for Supercomputing in Sweden (NAISS), partially funded by the Swedish Research Council
through grant agreement no. 2022-06725.
article_number: '2601.06646'
article_processing_charge: No
arxiv: 1
author:
- first_name: Sophie F.
full_name: Weber, Sophie F.
last_name: Weber
- first_name: Veronika
full_name: Sunko, Veronika
id: 23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3
last_name: Sunko
orcid: 0000-0003-2724-3523
citation:
ama: Weber SF, Sunko V. Deterministic domain selection of antiferromagnets via magnetic
fields. arXiv. doi:10.48550/arXiv.2601.06646
apa: Weber, S. F., & Sunko, V. (n.d.). Deterministic domain selection of antiferromagnets
via magnetic fields. arXiv. https://doi.org/10.48550/arXiv.2601.06646
chicago: Weber, Sophie F., and Veronika Sunko. “Deterministic Domain Selection of
Antiferromagnets via Magnetic Fields.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2601.06646.
ieee: S. F. Weber and V. Sunko, “Deterministic domain selection of antiferromagnets
via magnetic fields,” arXiv. .
ista: Weber SF, Sunko V. Deterministic domain selection of antiferromagnets via
magnetic fields. arXiv, 2601.06646.
mla: Weber, Sophie F., and Veronika Sunko. “Deterministic Domain Selection of Antiferromagnets
via Magnetic Fields.” ArXiv, 2601.06646, doi:10.48550/arXiv.2601.06646.
short: S.F. Weber, V. Sunko, ArXiv (n.d.).
date_created: 2026-03-11T10:40:20Z
date_published: 2026-01-10T00:00:00Z
date_updated: 2026-03-16T08:57:18Z
day: '10'
department:
- _id: VeSu
doi: 10.48550/arXiv.2601.06646
external_id:
arxiv:
- '2601.06646'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2601.06646
month: '01'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: submitted
status: public
title: Deterministic domain selection of antiferromagnets via magnetic fields
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2026'
...
---
OA_place: publisher
OA_type: gold
_id: '21436'
abstract:
- lang: eng
text: 'The cobalt-intercalated transition metal dichalcogenide CoxTaS2 hosts a rich
landscape of magnetic phases that depend sensitively on x. While the stoichiometric
compound with x = 1/3 exhibits a single magnetic transition, samples with x≤0.325
display two transitions with an anomalous Hall effect (AHE) emerging in the lower
temperature phase. Here, we resolve the spin structure in each phase by employing
a suite of magneto-optical probes that include the discovery of anomalous magneto-birefringence:
a spontaneous time-reversal sensitive rotation of the principal optic axes. A
symmetry-based analysis identifies the AHE-active phase as an anisotropic (2+1)Q
state, in which magnetic modulation at one wavevector (Q) differs in symmetry
from that at the remaining two. The (2+1)Q state naturally exhibits scalar spin
chirality as a mechanism for the AHE and expands the classification of multi-Q
magnetic phases.'
acknowledgement: 'We thank Linda Ye and Yue Sun for helpful discussion. Experimental
and theoretical work at LBNL and UC Berkeley was funded by the Quantum Materials
(KC2202) program under the U.S. Department of Energy, Office of Science, Office
of Basic Energy Sciences, Materials Sciences and Engineering Division under Contract
No. DE-AC02-05CH11231. V.S. and J.O. received support from the Gordon and Betty
Moore Foundation’s EPiQS Initiative through Grant GBMF4537 to J.O. at UC Berkeley.
J.K. received support from the National Science Foundation Graduate Research Fellowship
Program under Grant No. 2146752. Any opinions, findings, and conclusions or recommendations
expressed in this material are those of the author(s) and do not necessarily reflect
the views of the National Science Foundation. During the preparation of this manuscript,
we became aware of the following related work: refs. 56,57,58.'
article_number: '2507.12588'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Jonathon
full_name: Kruppe, Jonathon
last_name: Kruppe
- first_name: Josue
full_name: Rodriguez, Josue
last_name: Rodriguez
- first_name: Catherine
full_name: Xu, Catherine
last_name: Xu
- first_name: James
full_name: Analytis, James
last_name: Analytis
- first_name: Joseph
full_name: Orenstein, Joseph
last_name: Orenstein
- first_name: Veronika
full_name: Sunko, Veronika
id: 23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3
last_name: Sunko
orcid: 0000-0003-2724-3523
citation:
ama: Kruppe J, Rodriguez J, Xu C, Analytis J, Orenstein J, Sunko V. Anisotropic
multi-Q order in CoxTaS2. npj Quantum Materials. 2026. doi:10.1038/s41535-026-00856-w
apa: Kruppe, J., Rodriguez, J., Xu, C., Analytis, J., Orenstein, J., & Sunko,
V. (2026). Anisotropic multi-Q order in CoxTaS2. Npj Quantum Materials.
Springer Nature. https://doi.org/10.1038/s41535-026-00856-w
chicago: Kruppe, Jonathon, Josue Rodriguez, Catherine Xu, James Analytis, Joseph
Orenstein, and Veronika Sunko. “Anisotropic Multi-Q Order in CoxTaS2.” Npj
Quantum Materials. Springer Nature, 2026. https://doi.org/10.1038/s41535-026-00856-w.
ieee: J. Kruppe, J. Rodriguez, C. Xu, J. Analytis, J. Orenstein, and V. Sunko, “Anisotropic
multi-Q order in CoxTaS2,” npj Quantum Materials. Springer Nature, 2026.
ista: Kruppe J, Rodriguez J, Xu C, Analytis J, Orenstein J, Sunko V. 2026. Anisotropic
multi-Q order in CoxTaS2. npj Quantum Materials., 2507.12588.
mla: Kruppe, Jonathon, et al. “Anisotropic Multi-Q Order in CoxTaS2.” Npj Quantum
Materials, 2507.12588, Springer Nature, 2026, doi:10.1038/s41535-026-00856-w.
short: J. Kruppe, J. Rodriguez, C. Xu, J. Analytis, J. Orenstein, V. Sunko, Npj
Quantum Materials (2026).
corr_author: '1'
date_created: 2026-03-11T10:39:55Z
date_published: 2026-04-09T00:00:00Z
date_updated: 2026-04-15T13:03:14Z
day: '09'
department:
- _id: VeSu
doi: 10.1038/s41535-026-00856-w
external_id:
arxiv:
- '2507.12588'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1038/s41535-026-00856-w
month: '04'
oa: 1
oa_version: Published Version
publication: npj Quantum Materials
publication_identifier:
eissn:
- 2397-4648
publication_status: epub_ahead
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Anisotropic multi-Q order in CoxTaS2
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2026'
...
---
OA_place: repository
OA_type: green
_id: '21703'
abstract:
- lang: eng
text: Altermagnetism has recently emerged as a distinct class of collinear antiferromagnets
that break time-reversal symmetry, exhibiting a host of novel properties. Applied
strain has attracted particular attention as a key tuning parameter for altermagnets.
Although several experimental studies have demonstrated the preparation of single-domain
states through a combination of applied strain and magnetic field, the route to
such states remains unclear. Here, we use magneto-optical measurements on single
crystals of MnTe under applied strain to show that, in contrast to previous reports,
strain acts primarily to rotate the Néel vector L continuously. Since the orientation
of L determines the magnetic point group symmetry, this continuous rotation effectively
tunes the symmetry and its associated physical properties. Furthermore, we demonstrate
that built-in strain in free-standing crystals is sufficient to pin L into continuous
textures over millimeter length scales. Together, these results provide guidance
for future device design and open the door to leveraging the Néel vector orientation
as a tunable degree of freedom in spintronic applications.
acknowledgement: "This research was primarily funded by the Quantum Materials (KC2202)
program under the U.S. Department of Energy, Office of Science, Office of Basic
Energy Sciences, Materials Sciences and Engineering Division under Contract No.
DE-AC02-05CH11231, which supported the experimental and theoretical work at the
LBNL and UC Berkeley. N.J.G., R. B. R., and I.I.M.\r\nwere supported by Army Research
Office under Cooperative Agreement Number W911NF- 22-2-0173. H.M.L.N. and V.S. acknowledge
funding through the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)
through Grant No. TRR288—422213477, Project No. A10. H.M.L.N. acknowledges financial
support from the Max Planck Society. Research in Dresden benefits from the environment
provided by the DFG Cluster of Excellence ctd.qmat (EXC2147, Project ID 390858490)."
article_number: '2604.07653'
article_processing_charge: No
arxiv: 1
author:
- first_name: Alex Liebman-Peláez
full_name: Alex Liebman-Peláez, Alex Liebman-Peláez
last_name: Alex Liebman-Peláez
- first_name: Jon
full_name: Kruppe, Jon
last_name: Kruppe
- first_name: Resham Babu
full_name: Regmi, Resham Babu
last_name: Regmi
- first_name: Nirmal J.
full_name: Ghimire, Nirmal J.
last_name: Ghimire
- first_name: Yue
full_name: Sun, Yue
last_name: Sun
- first_name: Igor I.
full_name: Mazin, Igor I.
last_name: Mazin
- first_name: Hilary M. L.
full_name: Noad, Hilary M. L.
last_name: Noad
- first_name: James
full_name: Analytis, James
last_name: Analytis
- first_name: Veronika
full_name: Sunko, Veronika
id: 23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3
last_name: Sunko
orcid: 0000-0003-2724-3523
- first_name: Joseph
full_name: Orenstein, Joseph
last_name: Orenstein
citation:
ama: Alex Liebman-Peláez AL-P, Kruppe J, Regmi RB, et al. Strain continuously rotates
the Néel vector in altermagnetic MnTe. arXiv. doi:10.48550/arXiv.2604.07653
apa: Alex Liebman-Peláez, A. L.-P., Kruppe, J., Regmi, R. B., Ghimire, N. J., Sun,
Y., Mazin, I. I., … Orenstein, J. (n.d.). Strain continuously rotates the Néel
vector in altermagnetic MnTe. arXiv. https://doi.org/10.48550/arXiv.2604.07653
chicago: Alex Liebman-Peláez, Alex Liebman-Peláez, Jon Kruppe, Resham Babu Regmi,
Nirmal J. Ghimire, Yue Sun, Igor I. Mazin, Hilary M. L. Noad, James Analytis,
Veronika Sunko, and Joseph Orenstein. “Strain Continuously Rotates the Néel Vector
in Altermagnetic MnTe.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2604.07653.
ieee: A. L.-P. Alex Liebman-Peláez et al., “Strain continuously rotates the
Néel vector in altermagnetic MnTe,” arXiv. .
ista: Alex Liebman-Peláez AL-P, Kruppe J, Regmi RB, Ghimire NJ, Sun Y, Mazin II,
Noad HML, Analytis J, Sunko V, Orenstein J. Strain continuously rotates the Néel
vector in altermagnetic MnTe. arXiv, 2604.07653.
mla: Alex Liebman-Peláez, Alex Liebman-Peláez, et al. “Strain Continuously Rotates
the Néel Vector in Altermagnetic MnTe.” ArXiv, 2604.07653, doi:10.48550/arXiv.2604.07653.
short: A.L.-P. Alex Liebman-Peláez, J. Kruppe, R.B. Regmi, N.J. Ghimire, Y. Sun,
I.I. Mazin, H.M.L. Noad, J. Analytis, V. Sunko, J. Orenstein, ArXiv (n.d.).
date_created: 2026-04-10T14:17:21Z
date_published: 2026-04-08T00:00:00Z
date_updated: 2026-05-04T06:27:12Z
day: '08'
department:
- _id: VeSu
doi: 10.48550/arXiv.2604.07653
external_id:
arxiv:
- '2604.07653'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2604.07653
month: '04'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: submitted
status: public
title: Strain continuously rotates the Néel vector in altermagnetic MnTe
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2026'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
PlanS_conform: '1'
_id: '21872'
abstract:
- lang: eng
text: Magneto-optic Kerr effect (MOKE) is a powerful probe of broken time-reversal
symmetry (T), typically used to study ferromagnets. While MOKE has been observed
in some antiferromagnets (AFMs) with vanishing magnetization, it is often associated
with structures whose symmetry is lower than basic collinear, bipartite order.
In contrast, theory predicts a mechanism for MOKE intrinsic to all AFMs of A-type,
i.e. layered AFMs in which ferromagnetic layers are antiferromagnetically aligned.
Here we report the experimental confirmation of this mechanism in a bulk AFM.
We achieve this by measuring the imaginary component of MOKE as a function of
photon energy in MnBi2Te4, an A-type AFM where T is preserved in combination with
a translation, and comparing the experimental results with model calculations.
Our model suggests that observable MOKE should be expected in all collinear A-type
AFMs with out-of-plane spin order, thus enabling optical detection of AFM domains
and expanding the scope of MOKE to few-layer AFMs.
acknowledgement: We thank Christine Kuntscher for providing optical conductivity and
reflectance data published in ref. 33, and Nicola Spaldin, Joel Moore and Bevin
Huang for useful discussions. V.S. and J.O. received support from the Gordon and
Betty Moore Foundation’s EPiQS Initiative through Grant GBMF4537 awarded to J.O.
at UC Berkeley. Experimental and theoretical work at LBNL and UC Berkeley was funded
by the Quantum Materials (KC2202) program under the U.S. Department of Energy, Office
of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering
Division under Contract No. DE-AC02-05CH11231. Work at the University of Kansas
was supported by the U.S. Department of Energy, Office of Science, Basic Energy
Sciences, EPSCoR, and Materials Sciences and Engineering Division under Award No.
DE-SC0025319. Parts of device fabrication were performed in the KU Nanofabrication
Facility, which is supported by the National Institutes of Health NIGMS P30GM145499.
Work at ORNL was supported by the U. S. Department of Energy, Office of Science,
Basic Energy Sciences, Materials Sciences and Engineering Division. For the DFT
calculations we used resources provided by the Swedish National Infrastructure for
Computing (SNIC) at C3SE. We acknowledge support from the US National Science Foundation
(NSF) Grant Number 2201516 under the Accelnet program of Office of International
Science and Engineering (OISE). This publication is funded in part by a QuantEmX
grant from ICAM and the Gordon and Betty Moore Foundation through Grant GBMF9616
to S. K.
article_processing_charge: Yes
article_type: original
author:
- first_name: Veronika
full_name: Sunko, Veronika
id: 23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3
last_name: Sunko
orcid: 0000-0003-2724-3523
- first_name: Salman
full_name: Ahsanullah, Salman
last_name: Ahsanullah
- first_name: Vivek
full_name: Jain, Vivek
last_name: Jain
- first_name: Sophie
full_name: Weber, Sophie
last_name: Weber
- first_name: Sivaloganathan
full_name: Kumaran, Sivaloganathan
last_name: Kumaran
- first_name: Jiaqiang
full_name: Yan, Jiaqiang
last_name: Yan
- first_name: Joseph
full_name: Orenstein, Joseph
last_name: Orenstein
- first_name: Dmitry
full_name: Ovchinnikov, Dmitry
last_name: Ovchinnikov
citation:
ama: Sunko V, Ahsanullah S, Jain V, et al. Magneto-optical Kerr effect in an A-type
antiferromagnet. Nature Communications. 2026. doi:10.1038/s41467-026-72577-4
apa: Sunko, V., Ahsanullah, S., Jain, V., Weber, S., Kumaran, S., Yan, J., … Ovchinnikov,
D. (2026). Magneto-optical Kerr effect in an A-type antiferromagnet. Nature
Communications. Springer Nature. https://doi.org/10.1038/s41467-026-72577-4
chicago: Sunko, Veronika, Salman Ahsanullah, Vivek Jain, Sophie Weber, Sivaloganathan
Kumaran, Jiaqiang Yan, Joseph Orenstein, and Dmitry Ovchinnikov. “Magneto-Optical
Kerr Effect in an A-Type Antiferromagnet.” Nature Communications. Springer
Nature, 2026. https://doi.org/10.1038/s41467-026-72577-4.
ieee: V. Sunko et al., “Magneto-optical Kerr effect in an A-type antiferromagnet,”
Nature Communications. Springer Nature, 2026.
ista: Sunko V, Ahsanullah S, Jain V, Weber S, Kumaran S, Yan J, Orenstein J, Ovchinnikov
D. 2026. Magneto-optical Kerr effect in an A-type antiferromagnet. Nature Communications.
mla: Sunko, Veronika, et al. “Magneto-Optical Kerr Effect in an A-Type Antiferromagnet.”
Nature Communications, Springer Nature, 2026, doi:10.1038/s41467-026-72577-4.
short: V. Sunko, S. Ahsanullah, V. Jain, S. Weber, S. Kumaran, J. Yan, J. Orenstein,
D. Ovchinnikov, Nature Communications (2026).
corr_author: '1'
date_created: 2026-05-12T21:31:27Z
date_published: 2026-05-12T00:00:00Z
date_updated: 2026-06-10T09:45:53Z
day: '12'
ddc:
- '530'
department:
- _id: VeSu
doi: 10.1038/s41467-026-72577-4
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1038/s41467-026-72577-4
month: '05'
oa: 1
oa_version: Published Version
publication: Nature Communications
publication_identifier:
eissn:
- 2041-1723
publication_status: epub_ahead
publisher: Springer Nature
quality_controlled: '1'
related_material:
record:
- id: '21422'
relation: research_data
status: public
scopus_import: '1'
status: public
title: Magneto-optical Kerr effect in an A-type antiferromagnet
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
year: '2026'
...
---
OA_place: repository
_id: '21422'
article_processing_charge: No
author:
- first_name: Veronika
full_name: Sunko, Veronika
id: 23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3
last_name: Sunko
orcid: 0000-0003-2724-3523
citation:
ama: Sunko V. Data underpinning “Magneto-optical Kerr effect in an A-type antiferromagnet.”
2026. doi:10.15479/AT-ISTA-21422
apa: Sunko, V. (2026). Data underpinning “Magneto-optical Kerr effect in an A-type
antiferromagnet.” Institute of Science and Technology Austria. https://doi.org/10.15479/AT-ISTA-21422
chicago: Sunko, Veronika. “Data Underpinning ‘Magneto-Optical Kerr Effect in an
A-Type Antiferromagnet.’” Institute of Science and Technology Austria, 2026. https://doi.org/10.15479/AT-ISTA-21422.
ieee: V. Sunko, “Data underpinning ‘Magneto-optical Kerr effect in an A-type antiferromagnet.’”
Institute of Science and Technology Austria, 2026.
ista: Sunko V. 2026. Data underpinning ‘Magneto-optical Kerr effect in an A-type
antiferromagnet’, Institute of Science and Technology Austria, 10.15479/AT-ISTA-21422.
mla: Sunko, Veronika. Data Underpinning “Magneto-Optical Kerr Effect in an A-Type
Antiferromagnet.” Institute of Science and Technology Austria, 2026, doi:10.15479/AT-ISTA-21422.
short: V. Sunko, (2026).
corr_author: '1'
date_created: 2026-03-11T07:04:26Z
date_published: 2026-03-11T00:00:00Z
date_updated: 2026-06-10T09:45:54Z
day: '11'
department:
- _id: VeSu
doi: 10.15479/AT-ISTA-21422
file:
- access_level: open_access
checksum: 54db0b68f0cf919009317fd3da8f733b
content_type: application/zip
creator: vsunko
date_created: 2026-03-11T10:28:34Z
date_updated: 2026-03-11T10:28:34Z
file_id: '21429'
file_name: MBT_Data_Paper.zip
file_size: 85004
relation: main_file
success: 1
- access_level: open_access
checksum: df1785b7ada7cd07f76a441ee4f52266
content_type: text/plain
creator: vsunko
date_created: 2026-03-11T10:28:37Z
date_updated: 2026-03-11T10:28:37Z
file_id: '21430'
file_name: README.txt
file_size: 2593
relation: main_file
success: 1
file_date_updated: 2026-03-11T10:28:37Z
has_accepted_license: '1'
month: '03'
oa: 1
oa_version: Published Version
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '21872'
relation: used_in_publication
status: public
status: public
title: Data underpinning "Magneto-optical Kerr effect in an A-type antiferromagnet"
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: research_data
user_id: 68b8ca59-c5b3-11ee-8790-cd641c68093d
year: '2026'
...
---
OA_place: repository
OA_type: green
_id: '21435'
abstract:
- lang: eng
text: Multiferroic materials, in which electric polarization and magnetic order
coexist and couple, offer rich opportunities for both fundamental discovery and
technology. However, multiferroicity remains rare due to conflicting electronic
requirements for ferroelectricity and magnetism. One route to circumvent this
challenge is to exploit the noncollinear ordering of spin cycloids, whose symmetry
permits the emergence of polar order. In this work, we introduce another pathway
to multiferroic order in which strain generates polarization in materials that
host nonpolar spin spirals. To demonstrate this phenomenon, we chose the spin
spiral in the well-studied helimagnet Cr1/3NbS2. To detect the induced polarization,
we introduce the technique of magnetoelectric birefringence (MEB), an optical
probe that enables spatially-resolved and unambiguous detection of polar order.
By combining MEB imaging with strain engineering, we confirm the onset of a polar
vector at the magnetic transition, establishing strained Cr1/3NbS2 as a type-II
multiferroic.
acknowledgement: "Y.S., V.S. and J.O. received support from the Gordon and Betty Moore
Foundation’s\r\nEPiQS Initiative through Grant GBMF4537 to J.O. at UC Berkeley.
Experimental and theoretical work at LBNL and UC Berkeley was funded by the Quantum
Materials (KC2202) program under the U.S. Department of Energy, Office of Science,
Office of Basic Energy Sciences,\r\nMaterials Sciences and Engineering Division
under Contract No. DE-AC02-05CH11231.\r\nY.S. also acknowledges support by the David
J. Thouless Postdoctoral Fellowship at the\r\nDepartment of Physics, University
of Washington. DGM acknowledges support from the\r\nGordon and Betty Moore Foundation’s
EPiQS Initiative, Grant GBMF9069. L.Z. acknowledges the support from the U.S. Department
of Energy (DOE), Office of Science, Basic\r\nEnergy Science (BES), under award No.
DE-SC0024145"
article_number: '2510.11619'
article_processing_charge: No
arxiv: 1
author:
- first_name: Y.
full_name: Sun, Y.
last_name: Sun
- first_name: Y.
full_name: Ahn, Y.
last_name: Ahn
- first_name: D.
full_name: Sapkota, D.
last_name: Sapkota
- first_name: H. S.
full_name: Arachchige, H. S.
last_name: Arachchige
- first_name: R.
full_name: Xue, R.
last_name: Xue
- first_name: S.
full_name: Mozaffari, S.
last_name: Mozaffari
- first_name: D. G.
full_name: Mandrus, D. G.
last_name: Mandrus
- first_name: L.
full_name: Zhao, L.
last_name: Zhao
- first_name: J.
full_name: Orenstein, J.
last_name: Orenstein
- first_name: Veronika
full_name: Sunko, Veronika
id: 23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3
last_name: Sunko
orcid: 0000-0003-2724-3523
citation:
ama: Sun Y, Ahn Y, Sapkota D, et al. Strain-induced multiferroicity in Cr1/3NbS2.
arXiv. doi:10.48550/arXiv.2510.11619
apa: Sun, Y., Ahn, Y., Sapkota, D., Arachchige, H. S., Xue, R., Mozaffari, S., …
Sunko, V. (n.d.). Strain-induced multiferroicity in Cr1/3NbS2. arXiv. https://doi.org/10.48550/arXiv.2510.11619
chicago: Sun, Y., Y. Ahn, D. Sapkota, H. S. Arachchige, R. Xue, S. Mozaffari, D.
G. Mandrus, L. Zhao, J. Orenstein, and Veronika Sunko. “Strain-Induced Multiferroicity
in Cr1/3NbS2.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2510.11619.
ieee: Y. Sun et al., “Strain-induced multiferroicity in Cr1/3NbS2,” arXiv.
.
ista: Sun Y, Ahn Y, Sapkota D, Arachchige HS, Xue R, Mozaffari S, Mandrus DG, Zhao
L, Orenstein J, Sunko V. Strain-induced multiferroicity in Cr1/3NbS2. arXiv, 2510.11619.
mla: Sun, Y., et al. “Strain-Induced Multiferroicity in Cr1/3NbS2.” ArXiv,
2510.11619, doi:10.48550/arXiv.2510.11619.
short: Y. Sun, Y. Ahn, D. Sapkota, H.S. Arachchige, R. Xue, S. Mozaffari, D.G. Mandrus,
L. Zhao, J. Orenstein, V. Sunko, ArXiv (n.d.).
corr_author: '1'
date_created: 2026-03-11T10:39:44Z
date_published: 2025-10-13T00:00:00Z
date_updated: 2026-03-16T08:43:57Z
day: '13'
department:
- _id: VeSu
doi: 10.48550/arXiv.2510.11619
external_id:
arxiv:
- '2510.11619'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2510.11619
month: '10'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: submitted
status: public
title: Strain-induced multiferroicity in Cr1/3NbS2
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2025'
...
---
OA_place: repository
OA_type: green
_id: '21437'
abstract:
- lang: eng
text: Altermagnets are a class of collinear magnets that exhibit non-relativistic
spin splitting (NRSS) of electronic bands in the absence of net magnetization.
Their potential to generate large spin polarization without spin-orbit coupling
has created strong interest in probes that access the underlying order parameter
directly. In this Perspective, we show that linear magneto-birefringence (LMB)
provides a natural and broadly applicable route to detecting altermagnetic order.
Building on the correspondence between the momentum-space structure of NRSS and
the ferroic ordering of magnetic multipoles in real space, we demonstrate how
$d$-wave and $g$-wave NRSS textures yield distinct LMB responses. We present a
symmetry-based framework that identifies the optical geometries and field configurations
required to isolate specific multipole components, enabling domain imaging and
providing benchmarks for theoretical models of LMB.
acknowledgement: We thank Nicola Spaldin for valuable discussions. J.O. received support
from the Quantum Materials (KC2202) program under the U.S. Department of Energy,
Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering
Division under Contract No. DE-AC02-05CH11231, and the Gordon and Betty Moore Foundation’s
EPiQS Initiative through Grant GBMF4537 to J.O. at UC Berkeley.
article_number: '2511.16421'
article_processing_charge: No
arxiv: 1
author:
- first_name: Veronika
full_name: Sunko, Veronika
id: 23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3
last_name: Sunko
orcid: 0000-0003-2724-3523
- first_name: J.
full_name: Orenstein, J.
last_name: Orenstein
citation:
ama: Sunko V, Orenstein J. Linear magneto-birefringence as a probe of altermagnetism.
arXiv. doi:10.48550/arXiv.2511.16421
apa: Sunko, V., & Orenstein, J. (n.d.). Linear magneto-birefringence as a probe
of altermagnetism. arXiv. https://doi.org/10.48550/arXiv.2511.16421
chicago: Sunko, Veronika, and J. Orenstein. “Linear Magneto-Birefringence as a Probe
of Altermagnetism.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2511.16421.
ieee: V. Sunko and J. Orenstein, “Linear magneto-birefringence as a probe of altermagnetism,”
arXiv. .
ista: Sunko V, Orenstein J. Linear magneto-birefringence as a probe of altermagnetism.
arXiv, 2511.16421.
mla: Sunko, Veronika, and J. Orenstein. “Linear Magneto-Birefringence as a Probe
of Altermagnetism.” ArXiv, 2511.16421, doi:10.48550/arXiv.2511.16421.
short: V. Sunko, J. Orenstein, ArXiv (n.d.).
corr_author: '1'
date_created: 2026-03-11T10:40:08Z
date_published: 2025-11-20T00:00:00Z
date_updated: 2026-03-16T08:52:35Z
day: '20'
department:
- _id: VeSu
doi: 10.48550/arXiv.2511.16421
external_id:
arxiv:
- '2511.16421'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2511.16421
month: '11'
oa: 1
oa_version: Preprint
publication: arXiv
publication_status: submitted
status: public
title: Linear magneto-birefringence as a probe of altermagnetism
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: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2025'
...