Temperature Dependence of Relativistic Valence Band Splitting
Induced by an Altermagnetic Phase Transition

J 2024

Temperature Dependence of Relativistic Valence Band Splitting Induced by an Altermagnetic Phase Transition

HAJLAOUI, Mahdi; Sunil Wilfred D'SOUZA; Libor ŠMEJKAL; Dominik KRIEGNER; Gauthier KRIZMAN et. al.

Základní údaje

Originální název

Temperature Dependence of Relativistic Valence Band Splitting Induced by an Altermagnetic Phase Transition

Autoři

Vydání

Advanced Materials, WEINHEIM, Wiley-VCH Verlag GmbH, 2024, 0935-9648

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10302 Condensed matter physics

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 26.800

Kód RIV

RIV/00216224:14310/24:00137714

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1002/adma.202314076

UT WoS

001234197900001

EID Scopus

2-s2.0-85194697097

Klíčová slova anglicky

altermagnetism; angle-resolved photoemission spectroscopy; electronic band structure; spintronics

Štítky

14312020, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 21. 11. 2024 10:53, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Altermagnetic (AM) materials exhibit non-relativistic, momentum-dependent spin-split states, ushering in new opportunities for spin electronic devices. While the characteristics of spin-splitting are documented within the framework of the non-relativistic spin group symmetry, there is limited exploration of the inclusion of relativistic symmetry and its impact on the emergence of a novel spin-splitting in the band structure. This study delves into the intricate relativistic electronic structure of an AM material, alpha-MnTe. Employing temperature-dependent angle-resolved photoelectron spectroscopy across the AM phase transition, the emergence of a relativistic valence band splitting concurrent with the establishment of magnetic order is elucidated. This discovery is validated through disordered local moment calculations, modeling the influence of magnetic order on the electronic structure and confirming the magnetic origin of the observed splitting. The temperature-dependent splitting is ascribed to the advent of relativistic spin-splitting resulting from the strengthening of AM order in alpha-MnTe as the temperature decreases. This sheds light on a previously unexplored facet of this intriguing material.

Návaznosti

EH22_008/0004572, projekt VaV

Název: Kvantové materiály pro aplikace v udržitelných technologiích

90251, velká výzkumná infrastruktura

Název: CzechNanoLab II

Citovat

HAJLAOUI, Mahdi; Sunil Wilfred D'SOUZA; Libor ŠMEJKAL; Dominik KRIEGNER; Gauthier KRIZMAN; Tetiana ZAKUSYLO; Natalia OLSZOWSKA; Ondřej CAHA; Jan MICHALIČKA; Jaime SANCHEZ-BARRIGA; Alberto MARMODORO; Karel VÝBORNÝ; Arthur ERNST; Mirko CINCHETTI; Jan MINAR; Tomas JUNGWIRTH a Gunther SPRINGHOLZ. Temperature Dependence of Relativistic Valence Band Splitting Induced by an Altermagnetic Phase Transition. Advanced Materials. WEINHEIM: Wiley-VCH Verlag GmbH, 2024, roč. 36, č. 31, s. 2314076-2314083. ISSN 0935-9648. Dostupné z: https://doi.org/10.1002/adma.202314076.

@article{2453633,
   author = {Hajlaoui, Mahdi and D'Souza, Sunil Wilfred and Šmejkal, Libor and Kriegner, Dominik and Krizman, Gauthier and Zakusylo, Tetiana and Olszowska, Natalia and Caha, Ondřej and Michalička, Jan and SanchezandBarriga, Jaime and Marmodoro, Alberto and Výborný, Karel and Ernst, Arthur and Cinchetti, Mirko and Minar, Jan and Jungwirth, Tomas and Springholz, Gunther},
   article_location = {WEINHEIM},
   article_number = {31},
   doi = {https://doi.org/10.1002/adma.202314076},
   keywords = {altermagnetism; angle-resolved photoemission spectroscopy; electronic band structure; spintronics},
   language = {eng},
   issn = {0935-9648},
   journal = {Advanced Materials},
   title = {Temperature Dependence of Relativistic Valence Band Splitting Induced by an Altermagnetic Phase Transition},
   url = {https://onlinelibrary.wiley.com/doi/full/10.1002/adma.202314076},
   volume = {36},
   year = {2024}
}

TY  - JOUR
ID  - 2453633
AU  - Hajlaoui, Mahdi - D'Souza, Sunil Wilfred - Šmejkal, Libor - Kriegner, Dominik - Krizman, Gauthier - Zakusylo, Tetiana - Olszowska, Natalia - Caha, Ondřej - Michalička, Jan - Sanchez-Barriga, Jaime - Marmodoro, Alberto - Výborný, Karel - Ernst, Arthur - Cinchetti, Mirko - Minar, Jan - Jungwirth, Tomas - Springholz, Gunther
PY  - 2024
TI  - Temperature Dependence of Relativistic Valence Band Splitting Induced by an Altermagnetic Phase Transition
JF  - Advanced Materials
VL  - 36
IS  - 31
SP  - 2314076
EP  - 2314076
PB  - Wiley-VCH Verlag GmbH
SN  - 09359648
KW  - altermagnetism
KW  - angle-resolved photoemission spectroscopy
KW  - electronic band structure
KW  - spintronics
UR  - https://onlinelibrary.wiley.com/doi/full/10.1002/adma.202314076
N2  - Altermagnetic (AM) materials exhibit non-relativistic, momentum-dependent spin-split states, ushering in new opportunities for spin electronic devices. While the characteristics of spin-splitting are documented within the framework of the non-relativistic spin group symmetry, there is limited exploration of the inclusion of relativistic symmetry and its impact on the emergence of a novel spin-splitting in the band structure. This study delves into the intricate relativistic electronic structure of an AM material, alpha-MnTe. Employing temperature-dependent angle-resolved photoelectron spectroscopy across the AM phase transition, the emergence of a relativistic valence band splitting concurrent with the establishment of magnetic order is elucidated. This discovery is validated through disordered local moment calculations, modeling the influence of magnetic order on the electronic structure and confirming the magnetic origin of the observed splitting. The temperature-dependent splitting is ascribed to the advent of relativistic spin-splitting resulting from the strengthening of AM order in alpha-MnTe as the temperature decreases. This sheds light on a previously unexplored facet of this intriguing material.
ER  -

HAJLAOUI, Mahdi; Sunil Wilfred D'SOUZA; Libor ŠMEJKAL; Dominik KRIEGNER; Gauthier KRIZMAN; Tetiana ZAKUSYLO; Natalia OLSZOWSKA; Ondřej CAHA; Jan MICHALIČKA; Jaime SANCHEZ-BARRIGA; Alberto MARMODORO; Karel VÝBORNÝ; Arthur ERNST; Mirko CINCHETTI; Jan MINAR; Tomas JUNGWIRTH a Gunther SPRINGHOLZ. Temperature Dependence of Relativistic Valence Band Splitting Induced by an Altermagnetic Phase Transition. \textit{Advanced Materials}. WEINHEIM: Wiley-VCH Verlag GmbH, 2024, roč.~36, č.~31, s.~2314076-2314083. ISSN~0935-9648. Dostupné z: https://doi.org/10.1002/adma.202314076.

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