Theory of Domain-Wall Magnetoresistance in Metallic Antiferromagnets
arXiv:2004.07154 · doi:10.1103/PhysRevB.102.184413
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.
arXiv comment8 pages, 6 figures (This version is the same as the published one.)
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