Direct observation of altermagnetic band splitting in CrSb thin films

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • Sonka Reimers
  • Lukas Odenbreit
  • Libor Smejkal
  • Vladimir N Strocov
  • Procopios Constantinou
  • Anna B Hellenes
  • Rodrigo Jaeschke Ubiergo
  • Warlley H Campos
  • Venkata K Bharadwaj
  • Atasi Chakraborty
  • Thibaud Denneulin
  • Wen Shi
  • Rafal E Dunin-Borkowski
  • Suvadip Das
  • Mathias Klaeui
  • Jairo Sinova
  • Martin Jourdan
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:001181488200010&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1038/s41467-024-46476-5
eISSN
2041-1723
Externe Identifier
  • Clarivate Analytics Document Solution ID: KQ7C3
  • PubMed Identifier: 38459058
Ausgabe der Veröffentlichung
1
Zeitschrift
NATURE COMMUNICATIONS
Artikelnummer
ARTN 2116
Datum der Veröffentlichung
2024
Status
Published
Titel
Direct observation of altermagnetic band splitting in CrSb thin films
Sub types
  • Article
Ausgabe der Zeitschrift
15

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:title>Abstract</jats:title><jats:p>Altermagnetism represents an emergent collinear magnetic phase with compensated order and an unconventional alternating even-parity wave spin order in the non-relativistic band structure. We investigate directly this unconventional band splitting near the Fermi energy through spin-integrated soft X-ray angular resolved photoemission spectroscopy. The experimentally obtained angle-dependent photoemission intensity, acquired from epitaxial thin films of the predicted altermagnet CrSb, demonstrates robust agreement with the corresponding band structure calculations. In particular, we observe the distinctive splitting of an electronic band on a low-symmetry path in the Brilliouin zone that connects two points featuring symmetry-induced degeneracy. The measured large magnitude of the spin splitting of approximately 0.6 eV and the position of the band just below the Fermi energy underscores the significance of altermagnets for spintronics based on robust broken time reversal symmetry responses arising from exchange energy scales, akin to ferromagnets, while remaining insensitive to external magnetic fields and possessing THz dynamics, akin to antiferromagnets.</jats:p>
Autoren
  • Sonka Reimers
  • Lukas Odenbreit
  • Libor Šmejkal
  • Vladimir N Strocov
  • Procopios Constantinou
  • Anna B Hellenes
  • Rodrigo Jaeschke Ubiergo
  • Warlley H Campos
  • Venkata K Bharadwaj
  • Atasi Chakraborty
  • Thibaud Denneulin
  • Wen Shi
  • Rafal E Dunin-Borkowski
  • Suvadip Das
  • Mathias Kläui
  • Jairo Sinova
  • Martin Jourdan
DOI
10.1038/s41467-024-46476-5
eISSN
2041-1723
Ausgabe der Veröffentlichung
1
Zeitschrift
Nature Communications
Sprache
en
Artikelnummer
2116
Online publication date
2024
Status
Published online
Herausgeber
Springer Science and Business Media LLC
Herausgeber URL
http://dx.doi.org/10.1038/s41467-024-46476-5
Datum der Datenerfassung
2024
Titel
Direct observation of altermagnetic band splitting in CrSb thin films
Ausgabe der Zeitschrift
15

Datenquelle: Crossref

Abstract
Altermagnetism represents an emergent collinear magnetic phase with compensated order and an unconventional alternating even-parity wave spin order in the non-relativistic band structure. We investigate directly this unconventional band splitting near the Fermi energy through spin-integrated soft X-ray angular resolved photoemission spectroscopy. The experimentally obtained angle-dependent photoemission intensity, acquired from epitaxial thin films of the predicted altermagnet CrSb, demonstrates robust agreement with the corresponding band structure calculations. In particular, we observe the distinctive splitting of an electronic band on a low-symmetry path in the Brilliouin zone that connects two points featuring symmetry-induced degeneracy. The measured large magnitude of the spin splitting of approximately 0.6 eV and the position of the band just below the Fermi energy underscores the significance of altermagnets for spintronics based on robust broken time reversal symmetry responses arising from exchange energy scales, akin to ferromagnets, while remaining insensitive to external magnetic fields and possessing THz dynamics, akin to antiferromagnets.
Addresses
  • Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099, Mainz, Germany.
Autoren
  • Sonka Reimers
  • Lukas Odenbreit
  • Libor Šmejkal
  • Vladimir N Strocov
  • Procopios Constantinou
  • Anna B Hellenes
  • Rodrigo Jaeschke Ubiergo
  • Warlley H Campos
  • Venkata K Bharadwaj
  • Atasi Chakraborty
  • Thibaud Denneulin
  • Wen Shi
  • Rafal E Dunin-Borkowski
  • Suvadip Das
  • Mathias Kläui
  • Jairo Sinova
  • Martin Jourdan
DOI
10.1038/s41467-024-46476-5
eISSN
2041-1723
Externe Identifier
  • PubMed Identifier: 38459058
  • PubMed Central ID: PMC10923844
Funding acknowledgements
  • Deutsche Forschungsgemeinschaft: TRR 173
  • Deutsche Forschungsgemeinschaft (German Research Foundation): TRR 173
  • Deutsche Forschungsgemeinschaft: TRR 288
  • Deutsche Forschungsgemeinschaft (German Research Foundation): TRR 288
Open access
true
ISSN
2041-1723
Ausgabe der Veröffentlichung
1
Zeitschrift
Nature communications
Sprache
eng
Medium
Electronic
Online publication date
2024
Open access status
Open Access
Paginierung
2116
Datum der Veröffentlichung
2024
Status
Published
Publisher licence
CC BY
Datum der Datenerfassung
2024
Titel
Direct observation of altermagnetic band splitting in CrSb thin films.
Sub types
  • research-article
  • Journal Article
Ausgabe der Zeitschrift
15

Files

https://www.nature.com/articles/s41467-024-46476-5.pdf https://europepmc.org/articles/PMC10923844?pdf=render

Datenquelle: Europe PubMed Central

Abstract
Altermagnetism represents an emergent collinear magnetic phase with compensated order and an unconventional alternating even-parity wave spin order in the non-relativistic band structure. We investigate directly this unconventional band splitting near the Fermi energy through spin-integrated soft X-ray angular resolved photoemission spectroscopy. The experimentally obtained angle-dependent photoemission intensity, acquired from epitaxial thin films of the predicted altermagnet CrSb, demonstrates robust agreement with the corresponding band structure calculations. In particular, we observe the distinctive splitting of an electronic band on a low-symmetry path in the Brilliouin zone that connects two points featuring symmetry-induced degeneracy. The measured large magnitude of the spin splitting of approximately 0.6 eV and the position of the band just below the Fermi energy underscores the significance of altermagnets for spintronics based on robust broken time reversal symmetry responses arising from exchange energy scales, akin to ferromagnets, while remaining insensitive to external magnetic fields and possessing THz dynamics, akin to antiferromagnets.
Date of acceptance
2024
Autoren
  • Sonka Reimers
  • Lukas Odenbreit
  • Libor Šmejkal
  • Vladimir N Strocov
  • Procopios Constantinou
  • Anna B Hellenes
  • Rodrigo Jaeschke Ubiergo
  • Warlley H Campos
  • Venkata K Bharadwaj
  • Atasi Chakraborty
  • Thibaud Denneulin
  • Wen Shi
  • Rafal E Dunin-Borkowski
  • Suvadip Das
  • Mathias Kläui
  • Jairo Sinova
  • Martin Jourdan
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/38459058
DOI
10.1038/s41467-024-46476-5
eISSN
2041-1723
Externe Identifier
  • PubMed Central ID: PMC10923844
Funding acknowledgements
  • Deutsche Forschungsgemeinschaft (German Research Foundation): TRR 173
  • Deutsche Forschungsgemeinschaft (German Research Foundation): TRR 288
Ausgabe der Veröffentlichung
1
Zeitschrift
Nat Commun
Sprache
eng
Country
England
Paginierung
2116
PII
10.1038/s41467-024-46476-5
Datum der Veröffentlichung
2024
Status
Published online
Titel
Direct observation of altermagnetic band splitting in CrSb thin films.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
15

Datenquelle: PubMed

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