Determination of the spin-lifetime anisotropy in graphene using oblique spin precession

We determine the spin-lifetime anisotropy of spin-polarized carriers in graphene. In contrast to prior approaches, our method does not require large out-of-plane magnetic fields and thus it is reliable for both low-and high-carrier densities. We first determine the in-plane spin lifetime by conventi...

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Autores: Raes, Bart, Scheerder, Jeroen E., Costache, Marius V., Bonell, Fréderic, Sierra, Juan F., Cuppens, Jo, Vondel, Joris van de, Valenzuela, Sergio O.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/159384
Acceso en línea:http://hdl.handle.net/10261/159384
Access Level:acceso abierto
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spelling Determination of the spin-lifetime anisotropy in graphene using oblique spin precessionRaes, BartScheerder, Jeroen E.Costache, Marius V.Bonell, FrédericSierra, Juan F.Cuppens, JoVondel, Joris van deValenzuela, Sergio O.We determine the spin-lifetime anisotropy of spin-polarized carriers in graphene. In contrast to prior approaches, our method does not require large out-of-plane magnetic fields and thus it is reliable for both low-and high-carrier densities. We first determine the in-plane spin lifetime by conventional spin precession measurements with magnetic fields perpendicular to the graphene plane. Then, to evaluate the out-of-plane spin lifetime, we implement spin precession measurements under oblique magnetic fields that generate an out-of-plane spin population. We find that the spin-lifetime anisotropy of graphene on silicon oxide is independent of carrier density and temperature down to 150 K, and much weaker than previously reported. Indeed, within the experimental uncertainty, the spin relaxation is isotropic. Altogether with the gate dependence of the spin lifetime, this indicates that the spin relaxation is driven by magnetic impurities or random spin-orbit or gauge fields.This research was partially supported by the European Research Council under Grant Agreement No. 308023 SPINBOUND, by the Spanish Ministry of Economy and Competitiveness, MINECO (under Contract No. MAT2013-46785-P and Severo Ochoa No. SEV-2013-0295), and by the Secretariat for Universities and Research, Knowledge Department of the Generalitat de Catalunya. M.V.C., J.F.S. and J.C. acknowledge support from the Ramón y Cajal, Juan de la Cierva and Beatriu de Pinós programs, respectively. F.B. acknowledges funding from the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme FP7/2007-2013/ under REA Grant Agreement No. 624897. J.E.S. and J.V.d.V. acknowledge funding from the Methusalem Funding of the Flemish Government and the Research Foundation-Flanders (FWO).Peer ReviewedNature Publishing GroupFlemish GovernmentResearch Foundation - FlandersMethuselah FoundationGeneralitat de CatalunyaEuropean CommissionEuropean Research CouncilMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2018201820162018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/159384reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/SEV-2013-0295info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2013-46785-Pinfo:eu-repo/grantAgreement/EC/FP7/308023info:eu-repo/grantAgreement/EC/FP7/306652https://doi.org/10.1038/ncomms11444Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1593842026-05-22T06:33:51Z
dc.title.none.fl_str_mv Determination of the spin-lifetime anisotropy in graphene using oblique spin precession
title Determination of the spin-lifetime anisotropy in graphene using oblique spin precession
spellingShingle Determination of the spin-lifetime anisotropy in graphene using oblique spin precession
Raes, Bart
title_short Determination of the spin-lifetime anisotropy in graphene using oblique spin precession
title_full Determination of the spin-lifetime anisotropy in graphene using oblique spin precession
title_fullStr Determination of the spin-lifetime anisotropy in graphene using oblique spin precession
title_full_unstemmed Determination of the spin-lifetime anisotropy in graphene using oblique spin precession
title_sort Determination of the spin-lifetime anisotropy in graphene using oblique spin precession
dc.creator.none.fl_str_mv Raes, Bart
Scheerder, Jeroen E.
Costache, Marius V.
Bonell, Fréderic
Sierra, Juan F.
Cuppens, Jo
Vondel, Joris van de
Valenzuela, Sergio O.
author Raes, Bart
author_facet Raes, Bart
Scheerder, Jeroen E.
Costache, Marius V.
Bonell, Fréderic
Sierra, Juan F.
Cuppens, Jo
Vondel, Joris van de
Valenzuela, Sergio O.
author_role author
author2 Scheerder, Jeroen E.
Costache, Marius V.
Bonell, Fréderic
Sierra, Juan F.
Cuppens, Jo
Vondel, Joris van de
Valenzuela, Sergio O.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Flemish Government
Research Foundation - Flanders
Methuselah Foundation
Generalitat de Catalunya
European Commission
European Research Council
Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description We determine the spin-lifetime anisotropy of spin-polarized carriers in graphene. In contrast to prior approaches, our method does not require large out-of-plane magnetic fields and thus it is reliable for both low-and high-carrier densities. We first determine the in-plane spin lifetime by conventional spin precession measurements with magnetic fields perpendicular to the graphene plane. Then, to evaluate the out-of-plane spin lifetime, we implement spin precession measurements under oblique magnetic fields that generate an out-of-plane spin population. We find that the spin-lifetime anisotropy of graphene on silicon oxide is independent of carrier density and temperature down to 150 K, and much weaker than previously reported. Indeed, within the experimental uncertainty, the spin relaxation is isotropic. Altogether with the gate dependence of the spin lifetime, this indicates that the spin relaxation is driven by magnetic impurities or random spin-orbit or gauge fields.
publishDate 2016
dc.date.none.fl_str_mv 2016
2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/159384
url http://hdl.handle.net/10261/159384
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/SEV-2013-0295
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2013-46785-P
info:eu-repo/grantAgreement/EC/FP7/308023
info:eu-repo/grantAgreement/EC/FP7/306652
https://doi.org/10.1038/ncomms11444
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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