Photoinduced quantum spin and valley Hall effects, and orbital magnetization in monolayer MoS2

Handle URI:
http://hdl.handle.net/10754/346749
Title:
Photoinduced quantum spin and valley Hall effects, and orbital magnetization in monolayer MoS2
Authors:
Tahir, M.; Manchon, Aurelien ( 0000-0002-4768-293X ) ; Schwingenschlögl, Udo ( 0000-0003-4179-7231 )
Abstract:
We theoretically demonstrate that 100% valley-polarized transport in monolayers of MoS2 and other group-VI dichalcogenides can be obtained using off-resonant circularly polarized light. By tuning the intensity of the off-resonant light the intrinsic band gap in one valley is reduced, while it is enhanced in the other valley, enabling single valley quantum transport. As a consequence, we predict (i) enhancement of the longitudinal electrical conductivity, accompanied by an increase in the spin polarization of the flowing electrons, (ii) enhancement of the intrinsic spin Hall effect, together with a reduction of the intrinsic valley Hall effect, and (iii) enhancement of the orbital magnetic moment and orbital magnetization. These mechanisms provide appealing opportunities to the design of nanoelectronics based on dichalcogenides.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Photoinduced quantum spin and valley Hall effects, and orbital magnetization in monolayer MoS2, 2014, 90 (12) Physical Review B
Publisher:
American Physical Society
Journal:
Physical Review B
Issue Date:
22-Sep-2014
DOI:
10.1103/PhysRevB.90.125438
ARXIV:
arXiv:1504.04771
Type:
Article
ISSN:
1098-0121; 1550-235X
Additional Links:
http://link.aps.org/doi/10.1103/PhysRevB.90.125438; http://arxiv.org/abs/1504.04771
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorTahir, M.en
dc.contributor.authorManchon, Aurelienen
dc.contributor.authorSchwingenschlögl, Udoen
dc.date.accessioned2015-03-17T06:07:50Zen
dc.date.available2015-03-17T06:07:50Zen
dc.date.issued2014-09-22en
dc.identifier.citationPhotoinduced quantum spin and valley Hall effects, and orbital magnetization in monolayer MoS2, 2014, 90 (12) Physical Review Ben
dc.identifier.issn1098-0121en
dc.identifier.issn1550-235Xen
dc.identifier.doi10.1103/PhysRevB.90.125438en
dc.identifier.urihttp://hdl.handle.net/10754/346749en
dc.description.abstractWe theoretically demonstrate that 100% valley-polarized transport in monolayers of MoS2 and other group-VI dichalcogenides can be obtained using off-resonant circularly polarized light. By tuning the intensity of the off-resonant light the intrinsic band gap in one valley is reduced, while it is enhanced in the other valley, enabling single valley quantum transport. As a consequence, we predict (i) enhancement of the longitudinal electrical conductivity, accompanied by an increase in the spin polarization of the flowing electrons, (ii) enhancement of the intrinsic spin Hall effect, together with a reduction of the intrinsic valley Hall effect, and (iii) enhancement of the orbital magnetic moment and orbital magnetization. These mechanisms provide appealing opportunities to the design of nanoelectronics based on dichalcogenides.en
dc.publisherAmerican Physical Societyen
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevB.90.125438en
dc.relation.urlhttp://arxiv.org/abs/1504.04771en
dc.rightsArchived with thanks to Physical Review Ben
dc.titlePhotoinduced quantum spin and valley Hall effects, and orbital magnetization in monolayer MoS2en
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalPhysical Review Ben
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
dc.identifier.arxividarXiv:1504.04771en
kaust.authorTahir, Muhammaden
kaust.authorManchon, Aurelienen
kaust.authorSchwingenschlögl, Udoen
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