Crystal time-reversal symmetry breaking and spontaneous Hall effect in collinear antiferromagnets.

ABSTRACT: Electrons, commonly moving along the applied electric field, acquire in certain magnets a dissipationless transverse velocity. This spontaneous Hall effect, found more than a century ago, has been understood in terms of the time-reversal symmetry breaking by the internal spin structure of a ferromagnetic, noncolinear antiferromagnetic, or skyrmionic form. Here, we identify previously overlooked robust Hall effect mechanism arising from collinear antiferromagnetism combined with nonmagnetic atoms at noncentrosymmetric positions. We predict a large magnitude of this crystal Hall effect in a room temperature collinear antiferromagnet RuO₂ and catalog, based on symmetry rules, extensive families of material candidates. We show that the crystal Hall effect is accompanied by the possi

SUBMITTER: Smejkal L 

PROVIDER: S-EPMC7274798 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature