Single atom anisotropic magnetoresistance on a topological insulator surface

Handle URI:
http://hdl.handle.net/10754/597011
Title:
Single atom anisotropic magnetoresistance on a topological insulator surface
Authors:
Narayan, Awadhesh; Rungger, Ivan; Sanvito, Stefano
Abstract:
© 2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. We demonstrate single atom anisotropic magnetoresistance on the surface of a topological insulator, arising from the interplay between the helical spin-momentum-locked surface electronic structure and the hybridization of the magnetic adatom states. Our first-principles quantum transport calculations based on density functional theory for Mn on Bi2Se3 elucidate the underlying mechanism. We complement our findings with a two dimensional model valid for both single adatoms and magnetic clusters, which leads to a proposed device setup for experimental realization. Our results provide an explanation for the conflicting scattering experiments on magnetic adatoms on topological insulator surfaces, and reveal the real space spin texture around the magnetic impurity.
Citation:
Narayan A, Rungger I, Sanvito S (2015) Single atom anisotropic magnetoresistance on a topological insulator surface. New J Phys 17: 033021. Available: http://dx.doi.org/10.1088/1367-2630/17/3/033021.
Publisher:
IOP Publishing
Journal:
New Journal of Physics
Issue Date:
12-Mar-2015
DOI:
10.1088/1367-2630/17/3/033021
Type:
Article
ISSN:
1367-2630
Sponsors:
AN thanks the Irish Research Council for financial support (EMBARK initiative). IR and SS acknowledge support from KAUST (ACRAB project). We thank Aaron Hurley and Andrea Droghetti for useful discussions and Alin Elena for technical support at ICHEC. Computational resources have been provided by Irish Centre for High-End Computing (ICHEC) and Trinity Centre for High Performance Computing.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorNarayan, Awadheshen
dc.contributor.authorRungger, Ivanen
dc.contributor.authorSanvito, Stefanoen
dc.date.accessioned2016-02-23T13:52:26Zen
dc.date.available2016-02-23T13:52:26Zen
dc.date.issued2015-03-12en
dc.identifier.citationNarayan A, Rungger I, Sanvito S (2015) Single atom anisotropic magnetoresistance on a topological insulator surface. New J Phys 17: 033021. Available: http://dx.doi.org/10.1088/1367-2630/17/3/033021.en
dc.identifier.issn1367-2630en
dc.identifier.doi10.1088/1367-2630/17/3/033021en
dc.identifier.urihttp://hdl.handle.net/10754/597011en
dc.description.abstract© 2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. We demonstrate single atom anisotropic magnetoresistance on the surface of a topological insulator, arising from the interplay between the helical spin-momentum-locked surface electronic structure and the hybridization of the magnetic adatom states. Our first-principles quantum transport calculations based on density functional theory for Mn on Bi2Se3 elucidate the underlying mechanism. We complement our findings with a two dimensional model valid for both single adatoms and magnetic clusters, which leads to a proposed device setup for experimental realization. Our results provide an explanation for the conflicting scattering experiments on magnetic adatoms on topological insulator surfaces, and reveal the real space spin texture around the magnetic impurity.en
dc.description.sponsorshipAN thanks the Irish Research Council for financial support (EMBARK initiative). IR and SS acknowledge support from KAUST (ACRAB project). We thank Aaron Hurley and Andrea Droghetti for useful discussions and Alin Elena for technical support at ICHEC. Computational resources have been provided by Irish Centre for High-End Computing (ICHEC) and Trinity Centre for High Performance Computing.en
dc.publisherIOP Publishingen
dc.rightsContent from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.en
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en
dc.subjectdensity functional theoryen
dc.subjectmagnetoresistive devicesen
dc.subjectquantum transporten
dc.subjecttopological insulatorsen
dc.titleSingle atom anisotropic magnetoresistance on a topological insulator surfaceen
dc.typeArticleen
dc.identifier.journalNew Journal of Physicsen
dc.contributor.institutionTrinity College Dublin, Dublin, Irelanden
dc.contributor.institutionUniversity of Illinois at Urbana-Champaign, Urbana, United Statesen
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