Giant valley-polarized spin splittings in magnetized Janus Pt dichalcogenides

We reveal giant proximity-induced magnetism and valley-polarization effects in Janus Pt dichalcogenides (such as SPtSe), when bound to the europium oxide (EuO) substrate. Using first-principles simulations, it is surprisingly found that the charge redistribution, resulting from proximity with EuO, l...

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Autores: Sattar, Shahid, Larsson, Andreas J., Canali, C. M., Roche, Stephan, Garcia, Jose H.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/271098
Acceso en línea:http://hdl.handle.net/10261/271098
Access Level:acceso abierto
Palabra clave:First-principles calculations
Proximity effect
Spintronics
Valleytronics
Magnetic insulators
Transition metal dichalcogenides
Densitiy functional calculations
Electronic structure
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spelling Giant valley-polarized spin splittings in magnetized Janus Pt dichalcogenidesSattar, ShahidLarsson, Andreas J.Canali, C. M.Roche, StephanGarcia, Jose H.First-principles calculationsProximity effectSpintronicsValleytronicsMagnetic insulatorsTransition metal dichalcogenidesDensitiy functional calculationsElectronic structureWe reveal giant proximity-induced magnetism and valley-polarization effects in Janus Pt dichalcogenides (such as SPtSe), when bound to the europium oxide (EuO) substrate. Using first-principles simulations, it is surprisingly found that the charge redistribution, resulting from proximity with EuO, leads to the formation of two K and K′ valleys in the conduction bands. Each of these valleys displays its own spin polarization and a specific spin texture dictated by broken inversion and time-reversal symmetries, and valley-exchange and Rashba splittings as large as hundreds of meV. This provides a platform for exploring spin-valley physics in low-dimensional semiconductors, with potential spin transport mechanisms such as spin-orbit torques much more resilient to disorder and temperature effects.The computations were enabled by resources provided by the Swedish National Infrastructure for Computing (SNIC) at HPC2N and NSC partially funded by the Swedish Research Council through Grant Agreement No. 2018-05973. ICN2 authors were supported by King Abdullah University of Science and Technology (KAUST) through Award No. OSR-2018-CRG7-3717 from the Office of Sponsored Research (OSR) and by the European Union Horizon 2020 research and innovation program under Grant Agreement No. 881603 (Graphene Flagship). ICN2 is funded by the CERCA Programme/Generalitat de Catalunya, and is supported by the Severo Ochoa program from Spanish MINECO (Grants No. SEV-2017-0706 and No. MAT2016-75952-R).American Physical SocietySwedish Research CouncilKing Abdullah University of Science and TechnologyEuropean CommissionGeneralitat de CatalunyaMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2022202220222022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/271098reponame: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#info:eu-repo/grantAgreement/MINECO//SEV-2017-0706info:eu-repo/grantAgreement/MINECO//MAT2016-75952-Rinfo:eu-repo/grantAgreement/EC/H2020/881603Sattar, Shahid; Larsson, Andreas J.; Canali, C. M.; Roche, Stephan; Garcia, Jose H.; 2022; Supplemental Material of Giant Valley-Polarized Spin Splittings in Magnetized Janus Pt Dichalcogenides [Dataset]; American Physical Society; http://doi.org/10.1103/PhysRevB.105.L041402http://doi.org/10.1103/PhysRevB.105.L041402Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2710982026-05-22T06:33:51Z
dc.title.none.fl_str_mv Giant valley-polarized spin splittings in magnetized Janus Pt dichalcogenides
title Giant valley-polarized spin splittings in magnetized Janus Pt dichalcogenides
spellingShingle Giant valley-polarized spin splittings in magnetized Janus Pt dichalcogenides
Sattar, Shahid
First-principles calculations
Proximity effect
Spintronics
Valleytronics
Magnetic insulators
Transition metal dichalcogenides
Densitiy functional calculations
Electronic structure
title_short Giant valley-polarized spin splittings in magnetized Janus Pt dichalcogenides
title_full Giant valley-polarized spin splittings in magnetized Janus Pt dichalcogenides
title_fullStr Giant valley-polarized spin splittings in magnetized Janus Pt dichalcogenides
title_full_unstemmed Giant valley-polarized spin splittings in magnetized Janus Pt dichalcogenides
title_sort Giant valley-polarized spin splittings in magnetized Janus Pt dichalcogenides
dc.creator.none.fl_str_mv Sattar, Shahid
Larsson, Andreas J.
Canali, C. M.
Roche, Stephan
Garcia, Jose H.
author Sattar, Shahid
author_facet Sattar, Shahid
Larsson, Andreas J.
Canali, C. M.
Roche, Stephan
Garcia, Jose H.
author_role author
author2 Larsson, Andreas J.
Canali, C. M.
Roche, Stephan
Garcia, Jose H.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Swedish Research Council
King Abdullah University of Science and Technology
European Commission
Generalitat de Catalunya
Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv First-principles calculations
Proximity effect
Spintronics
Valleytronics
Magnetic insulators
Transition metal dichalcogenides
Densitiy functional calculations
Electronic structure
topic First-principles calculations
Proximity effect
Spintronics
Valleytronics
Magnetic insulators
Transition metal dichalcogenides
Densitiy functional calculations
Electronic structure
description We reveal giant proximity-induced magnetism and valley-polarization effects in Janus Pt dichalcogenides (such as SPtSe), when bound to the europium oxide (EuO) substrate. Using first-principles simulations, it is surprisingly found that the charge redistribution, resulting from proximity with EuO, leads to the formation of two K and K′ valleys in the conduction bands. Each of these valleys displays its own spin polarization and a specific spin texture dictated by broken inversion and time-reversal symmetries, and valley-exchange and Rashba splittings as large as hundreds of meV. This provides a platform for exploring spin-valley physics in low-dimensional semiconductors, with potential spin transport mechanisms such as spin-orbit torques much more resilient to disorder and temperature effects.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022
2022
2022
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/10261/271098
url http://hdl.handle.net/10261/271098
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#
info:eu-repo/grantAgreement/MINECO//SEV-2017-0706
info:eu-repo/grantAgreement/MINECO//MAT2016-75952-R
info:eu-repo/grantAgreement/EC/H2020/881603
Sattar, Shahid; Larsson, Andreas J.; Canali, C. M.; Roche, Stephan; Garcia, Jose H.; 2022; Supplemental Material of Giant Valley-Polarized Spin Splittings in Magnetized Janus Pt Dichalcogenides [Dataset]; American Physical Society; http://doi.org/10.1103/PhysRevB.105.L041402
http://doi.org/10.1103/PhysRevB.105.L041402
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
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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score 15,812429

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