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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F24%3APU152462" target="_blank" >RIV/00216305:26620/24:PU152462 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/24:00588400 RIV/00216224:14310/24:00137714 RIV/49777513:23640/24:43972941

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/adma.202314076" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/adma.202314076</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adma.202314076" target="_blank" >10.1002/adma.202314076</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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. Altermagnets exhibit momentum-dependent spin-split states providing new opportunities for spin electronic devices. Through temperature-dependent angle-resolved photoemission spectroscopy and disordered local moment calculations, it is demonstrated that the relativistic valence band splitting of the prototypical MnTe altermagnet is of magnetic origin. This is attributed to a novel relativistic spin-splitting phenomenon concurrent with the establishment of the altermagnetic order below the N & eacute;el temperature. image

Název v anglickém jazyce

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

Popis výsledku anglicky

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. Altermagnets exhibit momentum-dependent spin-split states providing new opportunities for spin electronic devices. Through temperature-dependent angle-resolved photoemission spectroscopy and disordered local moment calculations, it is demonstrated that the relativistic valence band splitting of the prototypical MnTe altermagnet is of magnetic origin. This is attributed to a novel relativistic spin-splitting phenomenon concurrent with the establishment of the altermagnetic order below the N & eacute;el temperature. image

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ADVANCED MATERIALS

ISSN

0935-9648

e-ISSN

1521-4095

Svazek periodika

36

Číslo periodika v rámci svazku

31

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

8

Strana od-do

„“-„“

Kód UT WoS článku

001234197900001

EID výsledku v databázi Scopus

2-s2.0-85194697097