6533b872fe1ef96bd12d432c
RESEARCH PRODUCT
Theory of domain-wall magnetoresistance in metallic antiferromagnets
Mathias KläuiMathias KläuiJun-hui ZhengArne BrataasAlireza Qaiumzadehsubject
Magnetoresistance530 PhysicsFOS: Physical sciences02 engineering and technologySpin structure01 natural sciencesMetal0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)AntiferromagnetismElectrical measurements010306 general physicsSpin-½PhysicsCondensed Matter - Materials ScienceQuantum PhysicsCondensed Matter - Mesoscale and Nanoscale PhysicsCondensed matter physicsMaterials Science (cond-mat.mtrl-sci)021001 nanoscience & nanotechnology530 PhysikOrientation (vector space)Domain wall (magnetism)visual_artvisual_art.visual_art_mediumCondensed Matter::Strongly Correlated Electrons0210 nano-technologyQuantum Physics (quant-ph)description
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-01-01 |