Manipulating anomalous Hall antiferromagnets with magnetic fields
Journal
Physical Review B
Journal Volume
101
Journal Issue
10
Date Issued
2020
Author(s)
Abstract
The symmetry considerations that imply a nonzero anomalous Hall effect (AHE) in certain noncollinear antiferromagnets also imply both nonzero orbital magnetization and a net spin magnetization. We have explicitly evaluated the orbital magnetizations of several anomalous Hall effect antiferromagnets and find that they tend to dominate over spin magnetizations, especially so when spin-orbit interactions are weak. Because of the greater relative importance of orbital magnetization, the coupling between magnetic order and an external magnetic field is unusual. We explain how magnetic fields can be used to manipulate magnetic configurations in these systems, pointing in particular to the important role played by the response of orbital magnetization to the Zeeman-like spin exchange fields. ? 2020 American Physical Society.
Subjects
Antiferromagnetic materials; Magnetization; Spin orbit coupling; Anomalous hall effects; Antiferromagnets; External magnetic field; Magnetic configuration; Orbital magnetization; Spin magnetization; Spin orbit interactions; Symmetry consideration; Spin Hall effect
Type
journal article