Anisotropy of the spin-polarized edge current in monolayer transition metal dichalcogenide zigzag nanoribbons

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorQufu Normal Univ-
Autor(es): dc.contributorUniversidade de Brasília (UnB)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorCSIC-
Autor(es): dc.creatorCorrea, J. H.-
Autor(es): dc.creatorDias, A. C.-
Autor(es): dc.creatorVillegas-Lelovsky, L. [UNESP]-
Autor(es): dc.creatorFu, Jiyong-
Autor(es): dc.creatorChico, Leonor-
Autor(es): dc.creatorQu, Fanyao-
Data de aceite: dc.date.accessioned2022-02-22T00:10:43Z-
Data de disponibilização: dc.date.available2022-02-22T00:10:43Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-05-15-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1103/PhysRevB.101.195422-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/196885-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/196885-
Descrição: dc.descriptionWe report anisotropic spin polarization of edge currents in MoS2 and WS2 monolayer zigzag nanoribbons (ZNRs) deposited on either nonmagnetic or ferromagnetic insulator substrates. We employ an 11-band tight-binding model to calculate the electronic band structures of transition metal dichalcogenide (TMDC) monolayers and their corresponding nanoribbons in the presence of Rashba spin-orbit coupling (RSOC) and magnetic proximity effect produced by ferromagnetic substrate. We adopt the nonequilibrium Green's function method together with Landauer-Bfittiker formalism to study the quantum transport behavior stemming from the edge states of ZNRs. We demonstrate that the spin-polarized edge current can be generated in both MoS2 and WS2 ZNRs with RSOC. We find that the spin polarization spreads out in all three directions. This is in stark contrast to what occurs in zigzag graphene nanoribbons, for which the polarization only exists in the transverse direction (across the width of ribbons). In addition, the spin polarization direction strongly depends on the strength of the intrinsic SOC component. The interplay of Rashba and intrinsic SOC is crucial for the spin polarization of the currents in any spatial direction. For TMDCs with stronger intrinsic SOC such as in WS2 monolayer ZNRs, we observe that the spin polarization along the perpendicular direction to the plane of the ZNR can be as large as 90%. Moreover, the unusual anisotropy of the spin polarization can be further enhanced by the magnetic proximity effect. These results open up possibilities for the generation of tunable high-spin polarization currents in ZNRs without application of an external magnetic field.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFAPDF-
Descrição: dc.descriptionQufu Normal University-
Descrição: dc.descriptionNational Natural Science Foundation of China-
Descrição: dc.descriptionSpanish MINECO-
Descrição: dc.descriptionEuropean Union-
Descrição: dc.descriptionQufu Normal Univ, Dept Phys, Qufu 273165, Shandong, Peoples R China-
Descrição: dc.descriptionUniv Brasilia, Inst Fis, BR-70919970 Brasilia, DF, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Dept Fis, IGCE, BR-13506900 Rio Claro, SP, Brazil-
Descrição: dc.descriptionUniv Fed Sao Carlos, Ctr Ciencias Exatas & Tecnol, Dept Fis, BR-13565905 Sao Carlos, SP, Brazil-
Descrição: dc.descriptionCSIC, Inst Ciencia Mat Madrid, C Sor Juana Ines de la Cruz 3, Madrid 28049, Spain-
Descrição: dc.descriptionUniv Estadual Paulista, Dept Fis, IGCE, BR-13506900 Rio Claro, SP, Brazil-
Descrição: dc.descriptionNational Natural Science Foundation of China: 11004120-
Descrição: dc.descriptionNational Natural Science Foundation of China: 11874236-
Descrição: dc.descriptionEuropean Union: FIS2015-64654 P/MINECO/FEDER-
Descrição: dc.descriptionEuropean Union: PGC2018-097018-B-I00-
Formato: dc.format13-
Idioma: dc.languageen-
Publicador: dc.publisherAmer Physical Soc-
Relação: dc.relationPhysical Review B-
???dc.source???: dc.sourceWeb of Science-
Título: dc.titleAnisotropy of the spin-polarized edge current in monolayer transition metal dichalcogenide zigzag nanoribbons-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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