Intrinsic nonadiabatic topological torque in magnetic skyrmions and vortices

Handle URI:
http://hdl.handle.net/10754/623639
Title:
Intrinsic nonadiabatic topological torque in magnetic skyrmions and vortices
Authors:
Akosa, Collins Ashu ( 0000-0002-5367-9972 ) ; Ndiaye, Papa Birame ( 0000-0002-6722-8769 ) ; Manchon, Aurelien ( 0000-0002-4768-293X )
Abstract:
We propose that topological spin currents flowing in topologically nontrivial magnetic textures, such as magnetic skyrmions and vortices, produce an intrinsic nonadiabatic torque of the form Tt∼[(∂xm×∂ym)·m]∂ym. We show that this torque, which is absent in one-dimensional domain walls and/or nontopological textures, is responsible for the enhanced nonadiabaticity parameter observed in magnetic vortices compared to one-dimensional textures. The impact of this torque on the motion of magnetic skyrmions is expected to be crucial, especially to determine their robustness against defects and pinning centers.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program
Citation:
Akosa CA, Ndiaye PB, Manchon A (2017) Intrinsic nonadiabatic topological torque in magnetic skyrmions and vortices. Physical Review B 95. Available: http://dx.doi.org/10.1103/PhysRevB.95.054434.
Publisher:
American Physical Society (APS)
Journal:
Physical Review B
KAUST Grant Number:
OSR-CRG URF/1/1693-01
Issue Date:
1-Mar-2017
DOI:
10.1103/PhysRevB.95.054434
Type:
Article
ISSN:
2469-9950; 2469-9969
Sponsors:
C.A. and A.M. acknowledges financial support from the King Abdullah University of Science and Technology (KAUST) through the Award No. OSR-CRG URF/1/1693-01 from the Office of Sponsored Research (OSR). The authors thank M. Kläui, Kyung-Jin Lee, Gen Tatara, A. Bisig, and A. Abbout for inspiring discussions.
Additional Links:
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.054434
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorAkosa, Collins Ashuen
dc.contributor.authorNdiaye, Papa Birameen
dc.contributor.authorManchon, Aurelienen
dc.date.accessioned2017-05-17T07:41:39Z-
dc.date.available2017-05-17T07:41:39Z-
dc.date.issued2017-03-01en
dc.identifier.citationAkosa CA, Ndiaye PB, Manchon A (2017) Intrinsic nonadiabatic topological torque in magnetic skyrmions and vortices. Physical Review B 95. Available: http://dx.doi.org/10.1103/PhysRevB.95.054434.en
dc.identifier.issn2469-9950en
dc.identifier.issn2469-9969en
dc.identifier.doi10.1103/PhysRevB.95.054434en
dc.identifier.urihttp://hdl.handle.net/10754/623639-
dc.description.abstractWe propose that topological spin currents flowing in topologically nontrivial magnetic textures, such as magnetic skyrmions and vortices, produce an intrinsic nonadiabatic torque of the form Tt∼[(∂xm×∂ym)·m]∂ym. We show that this torque, which is absent in one-dimensional domain walls and/or nontopological textures, is responsible for the enhanced nonadiabaticity parameter observed in magnetic vortices compared to one-dimensional textures. The impact of this torque on the motion of magnetic skyrmions is expected to be crucial, especially to determine their robustness against defects and pinning centers.en
dc.description.sponsorshipC.A. and A.M. acknowledges financial support from the King Abdullah University of Science and Technology (KAUST) through the Award No. OSR-CRG URF/1/1693-01 from the Office of Sponsored Research (OSR). The authors thank M. Kläui, Kyung-Jin Lee, Gen Tatara, A. Bisig, and A. Abbout for inspiring discussions.en
dc.publisherAmerican Physical Society (APS)en
dc.relation.urlhttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.054434en
dc.rightsArchived with thanks to Physical Review Ben
dc.titleIntrinsic nonadiabatic topological torque in magnetic skyrmions and vorticesen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalPhysical Review Ben
dc.eprint.versionPublisher's Version/PDFen
kaust.authorAkosa, Collins Ashuen
kaust.authorNdiaye, Papa Birameen
kaust.authorManchon, Aurelienen
kaust.grant.numberOSR-CRG URF/1/1693-01en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.