X-Ray Magnetic Circular Dichroism in Altermagnetic   α  -MnTe

Hariki, Atsushi; Din, A. Dal; Amin, O. J.; Yamaguchi, Tatsuya; Baďura, Antonín; Kriegner, Dominik; Edmonds, K. W.; Campion, R. P.; Wadley, P.; Backes, D.; Veiga, L. S. I.; Dhesi, S. S.; Springholz, G.; Šmejkal, Libor; Výborný, Karel; Jungwirth, T.; Kuneš, J.

doi:10.1103/physrevlett.132.176701

articlePhysical Review LettersApr 23, 2024GREEN OA

X-Ray Magnetic Circular Dichroism in Altermagnetic α -MnTe

AHAtsushi Hariki ADA. Dal Din OJO. J. Amin TYTatsuya Yamaguchi ABAntonín Baďura

Osaka Metropolitan University · University of Nottingham · +6 more institutions

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Abstract

Altermagnetism is a recently identified magnetic symmetry class combining characteristics of conventional collinear ferromagnets and antiferromagnets, that were regarded as mutually exclusive, and enabling phenomena and functionalities unparalleled in either of the two traditional elementary magnetic classes. In this work we use symmetry, ab initio theory, and experiments to explore x-ray magnetic circular dichroism (XMCD) in the altermagnetic class. As a representative material for our XMCD study we choose α-MnTe with compensated antiparallel magnetic order in which an anomalous Hall effect has been already demonstrated. We predict and experimentally confirm a characteristic XMCD line shape for compensated…

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Keywords

Physics
Circular dichroism
Crystallography
Chemistry

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