Theory of Domain-Wall Magnetoresistance in Metallic Antiferromagnets
Mesoscale and Nanoscale Physics
2020-11-16 v2 Materials Science
Quantum Physics
Abstract
We develop a theory to compute the domain-wall magnetoresistance (DWMR) in antiferromagnetic (AFM) metals with different spin structures. In the diffusive transport regime, the DWMR can be either {\it negative} or positive depending on the domain-wall orientation and spin structure. In contrast, when the transport is in the ballistic regime, the DWMR is always positive, and the magnitude depends on the width and orientation of the domain wall. Our results pave the way of using electrical measurements for probing the internal spin structure in antiferromagnetic metals.
Keywords
Cite
@article{arxiv.2004.07154,
title = {Theory of Domain-Wall Magnetoresistance in Metallic Antiferromagnets},
author = {Jun-Hui Zheng and Arne Brataas and Mathias Kläui and Alireza Qaiumzadeh},
journal= {arXiv preprint arXiv:2004.07154},
year = {2020}
}
Comments
8 pages, 6 figures (This version is the same as the published one.)