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...
| Autores: | , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:211135 |
| Acceso en línea: | https://ddd.uab.cat/record/211135 https://dx.doi.org/urn:doi:10.1038/ncomms11444 |
| Access Level: | acceso abierto |
| Palabra clave: | Graphene Magnetic properties and materials Spintronics |
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oai:ddd.uab.cat:211135 |
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Determination of the spin-lifetime anisotropy in graphene using oblique spin precessionRaes, BartScheerder, Jeroen E.Costache, Marius Vasile|||0000-0001-7432-6175Bonell, Frédéric|||0000-0001-7296-0404Sierra, Juan F.|||0000-0002-5438-0534Cuppens, JoVan De Vondel, JorisValenzuela, Sergio O.|||0000-0002-4632-8891GrapheneMagnetic properties and materialsSpintronicsWe 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. 22016-01-0120162016-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/211135https://dx.doi.org/urn:doi:10.1038/ncomms11444reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengEuropean Commission https://doi.org/10.13039/501100000780 308023Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 MAT2013-46785-PMinisterio de Economía y Competitividad https://doi.org/10.13039/501100003329 SEV-2013-0295European Commission https://doi.org/10.13039/501100000780 624897open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2111352026-06-06T12:50:31Z |
| 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 Graphene Magnetic properties and materials Spintronics |
| 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 Vasile|||0000-0001-7432-6175 Bonell, Frédéric|||0000-0001-7296-0404 Sierra, Juan F.|||0000-0002-5438-0534 Cuppens, Jo Van De Vondel, Joris Valenzuela, Sergio O.|||0000-0002-4632-8891 |
| author |
Raes, Bart |
| author_facet |
Raes, Bart Scheerder, Jeroen E. Costache, Marius Vasile|||0000-0001-7432-6175 Bonell, Frédéric|||0000-0001-7296-0404 Sierra, Juan F.|||0000-0002-5438-0534 Cuppens, Jo Van De Vondel, Joris Valenzuela, Sergio O.|||0000-0002-4632-8891 |
| author_role |
author |
| author2 |
Scheerder, Jeroen E. Costache, Marius Vasile|||0000-0001-7432-6175 Bonell, Frédéric|||0000-0001-7296-0404 Sierra, Juan F.|||0000-0002-5438-0534 Cuppens, Jo Van De Vondel, Joris Valenzuela, Sergio O.|||0000-0002-4632-8891 |
| author2_role |
author author author author author author author |
| dc.subject.none.fl_str_mv |
Graphene Magnetic properties and materials Spintronics |
| topic |
Graphene Magnetic properties and materials Spintronics |
| 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 |
2 2016-01-01 2016 2016-01-01 |
| dc.type.none.fl_str_mv |
Article http://purl.org/coar/resource_type/c_6501 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://ddd.uab.cat/record/211135 https://dx.doi.org/urn:doi:10.1038/ncomms11444 |
| url |
https://ddd.uab.cat/record/211135 https://dx.doi.org/urn:doi:10.1038/ncomms11444 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.relation.none.fl_str_mv |
European Commission https://doi.org/10.13039/501100000780 308023 Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 MAT2013-46785-P Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 SEV-2013-0295 European Commission https://doi.org/10.13039/501100000780 624897 |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by/4.0/ |
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info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by/4.0/ |
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openAccess |
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application/pdf |
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reponame:Dipòsit Digital de Documents de la UAB instname:Universitat Autònoma de Barcelona |
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Universitat Autònoma de Barcelona |
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Dipòsit Digital de Documents de la UAB |
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Dipòsit Digital de Documents de la UAB |
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