Uncovering hidden spin polarization of energy bands in antiferromagnets

Autor:	Lin-Ding Yuan, Xiuwen Zhang, Carlos Mera Acosta, Alex Zunger
Rok vydání:	2022
Předmět:	Condensed Matter - Materials Science Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences
Popis:	Many textbook physical effects in crystals are enabled by some specific symmetries. In contrast to such "apparent effects", "hidden effect X" refers to the general condition where the nominal global system symmetry would disallow the effect X, whereas the symmetry of local sectors within the crystal would enable effect X. Known examples include the hidden Rashba and/or hidden Dresselhaus spin polarization that require spin orbit coupling, but (unlike the apparent Rashba and Dresselhaus counterparts) can exist even in inversion-symmetric non-magnetic crystals. Here we point out that the spin splitting effect that does not require spin-orbit coupling (SOC) can have a hidden spin polarization counterpart in antiferromagnets. We show that such hidden, SOC-independent effects reflect intrinsic properties of the perfect crystal rather than an effect due to imperfections, opening the possibility for experimental realization, and offering a potential way to switch antiferromagnetic ordering. 16 pages, 5 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16a1909157d07a5760d45124104d3358 https://doi.org/10.21203/rs.3.rs-2285965/v1 Zobrazit plný text záznamu