Cooperative Charge Pumping and Enhanced Skyrmion Mobility

Handle URI:
http://hdl.handle.net/10754/627495
Title:
Cooperative Charge Pumping and Enhanced Skyrmion Mobility
Authors:
Abbout, Adel; Weston, Joseph; Waintal, Xavier; Manchon, Aurelien ( 0000-0002-4768-293X )
Abstract:
The electronic pumping arising from the steady motion of ferromagnetic skyrmions is investigated by solving the time evolution of the Schrodinger equation implemented on a tight-binding model with the statistical physics of the many-body problem. It is shown that the ability of steadily moving skyrmions to pump large charge currents arises from their non-trivial magnetic topology, i.e. the coexistence between spin-motive force and topological Hall effect. Based on an adiabatic scattering theory, we compute the pumped current and demonstrate that it scales with the reflection coefficient of the conduction electrons against the skyrmion. Finally, we propose that such a phenomenon can be exploited in the context of racetrack devices, where the electronic pumping enhances the collective motion of the train of skyrmions.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program
Publisher:
arXiv
Issue Date:
6-Apr-2018
ARXIV:
arXiv:1804.02460
Type:
Preprint
Additional Links:
http://arxiv.org/abs/1804.02460v1; http://arxiv.org/pdf/1804.02460v1
Appears in Collections:
Other/General Submission; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorAbbout, Adelen
dc.contributor.authorWeston, Josephen
dc.contributor.authorWaintal, Xavieren
dc.contributor.authorManchon, Aurelienen
dc.date.accessioned2018-04-16T11:27:41Z-
dc.date.available2018-04-16T11:27:41Z-
dc.date.issued2018-04-06en
dc.identifier.urihttp://hdl.handle.net/10754/627495-
dc.description.abstractThe electronic pumping arising from the steady motion of ferromagnetic skyrmions is investigated by solving the time evolution of the Schrodinger equation implemented on a tight-binding model with the statistical physics of the many-body problem. It is shown that the ability of steadily moving skyrmions to pump large charge currents arises from their non-trivial magnetic topology, i.e. the coexistence between spin-motive force and topological Hall effect. Based on an adiabatic scattering theory, we compute the pumped current and demonstrate that it scales with the reflection coefficient of the conduction electrons against the skyrmion. Finally, we propose that such a phenomenon can be exploited in the context of racetrack devices, where the electronic pumping enhances the collective motion of the train of skyrmions.en
dc.publisherarXiven
dc.relation.urlhttp://arxiv.org/abs/1804.02460v1en
dc.relation.urlhttp://arxiv.org/pdf/1804.02460v1en
dc.rightsArchived with thanks to arXiven
dc.titleCooperative Charge Pumping and Enhanced Skyrmion Mobilityen
dc.typePreprinten
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.eprint.versionPre-printen
dc.contributor.institutionUniversity Grenoble Alpes, INAC-PHELIQS, F-38000 Grenoble, France CEA, INAC-PHELIQS, F-38000 Grenoble, Franceen
dc.identifier.arxividarXiv:1804.02460en
kaust.authorAbbout, Adelen
kaust.authorManchon, Aurelienen
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