Theory of Topological Spin Hall Effect in Antiferromagnetic Skyrmion: Impact on Current-induced Motion
dc.contributor.author | Akosa, Collins Ashu | |
dc.contributor.author | Tretiakov, O. A. | |
dc.contributor.author | Tatara, G. | |
dc.contributor.author | Manchon, Aurelien | |
dc.date.accessioned | 2017-12-28T07:32:16Z | |
dc.date.available | 2017-12-28T07:32:16Z | |
dc.date.issued | 2017-09-09 | |
dc.identifier.uri | http://hdl.handle.net/10754/626558 | |
dc.description.abstract | We demonstrate that the nontrivial magnetic texture of antiferromagnetic skyrmions (AFM-Sks) promotes a non-vanishing topological spin Hall effect (TSHE) on the flowing electrons. This results in a substantial enhancement of the non-adiabatic torque and hence improves the skyrmion mobility. This non-adiabatic torque increases when decreasing the skyrmion size, and therefore scaling down results in a much higher torque efficiency. In clean AFM-Sks, we find a significant boost of the TSHE close to van Hove singularity. Interestingly, this effect is enhanced away from the band gap in the presence of non-magnetic interstitial defects. Furthermore, unlike their ferromagnetic counterpart, TSHE in AFM-Sks increases with increase in disorder strength thus opening promising avenues for materials engineering of this effect. | |
dc.publisher | arXiv | |
dc.relation.url | http://arxiv.org/abs/1709.02931v1 | |
dc.relation.url | http://arxiv.org/pdf/1709.02931v1 | |
dc.rights | Archived with thanks to arXiv | |
dc.title | Theory of Topological Spin Hall Effect in Antiferromagnetic Skyrmion: Impact on Current-induced Motion | |
dc.type | Preprint | |
dc.contributor.department | Material Science and Engineering Program | |
dc.contributor.department | Physical Science and Engineering (PSE) Division | |
dc.contributor.department | Spintronics Theory Group | |
dc.eprint.version | Pre-print | |
dc.contributor.institution | RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan | |
dc.contributor.institution | Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan | |
dc.identifier.arxivid | 1709.02931 | |
kaust.person | Akosa, Collins Ashu | |
kaust.person | Manchon, Aurelien | |
dc.version | v1 | |
refterms.dateFOA | 2018-06-14T09:21:57Z |
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