Giant spin-orbit-induced spin splitting in two-dimensional transition-metal dichalcogenide semiconductors

Handle URI:
http://hdl.handle.net/10754/315771
Title:
Giant spin-orbit-induced spin splitting in two-dimensional transition-metal dichalcogenide semiconductors
Authors:
Zhu, Zhiyong; Cheng, Yingchun; Schwingenschlögl, Udo ( 0000-0003-4179-7231 )
Abstract:
Fully relativistic first-principles calculations based on density functional theory are performed to study the spin-orbit-induced spin splitting in monolayer systems of the transition-metal dichalcogenides MoS2, MoSe2, WS2, and WSe2. All these systems are identified as direct-band-gap semiconductors. Giant spin splittings of 148–456 meV result from missing inversion symmetry. Full out-of-plane spin polarization is due to the two-dimensional nature of the electron motion and the potential gradient asymmetry. By suppression of the Dyakonov-Perel spin relaxation, spin lifetimes are expected to be very long. Because of the giant spin splittings, the studied materials have great potential in spintronics applications.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Computational Physics and Materials Science (CPMS)
Citation:
Zhu ZY, Cheng YC, Schwingenschlögl U (2011) Giant spin-orbit-induced spin splitting in two-dimensional transition-metal dichalcogenide semiconductors. Phys Rev B 84. doi:10.1103/PhysRevB.84.153402.
Publisher:
American Physical Society (APS)
Journal:
Physical Review B
Issue Date:
14-Oct-2011
DOI:
10.1103/PhysRevB.84.153402
Type:
Article
ISSN:
1098-0121; 1550-235X
Additional Links:
http://link.aps.org/doi/10.1103/PhysRevB.84.153402
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Computational Physics and Materials Science (CPMS)

Full metadata record

DC FieldValue Language
dc.contributor.authorZhu, Zhiyongen
dc.contributor.authorCheng, Yingchunen
dc.contributor.authorSchwingenschlögl, Udoen
dc.date.accessioned2014-04-13T13:45:53Z-
dc.date.available2014-04-13T13:45:53Z-
dc.date.issued2011-10-14en
dc.identifier.citationZhu ZY, Cheng YC, Schwingenschlögl U (2011) Giant spin-orbit-induced spin splitting in two-dimensional transition-metal dichalcogenide semiconductors. Phys Rev B 84. doi:10.1103/PhysRevB.84.153402.en
dc.identifier.issn1098-0121en
dc.identifier.issn1550-235Xen
dc.identifier.doi10.1103/PhysRevB.84.153402en
dc.identifier.urihttp://hdl.handle.net/10754/315771en
dc.description.abstractFully relativistic first-principles calculations based on density functional theory are performed to study the spin-orbit-induced spin splitting in monolayer systems of the transition-metal dichalcogenides MoS2, MoSe2, WS2, and WSe2. All these systems are identified as direct-band-gap semiconductors. Giant spin splittings of 148–456 meV result from missing inversion symmetry. Full out-of-plane spin polarization is due to the two-dimensional nature of the electron motion and the potential gradient asymmetry. By suppression of the Dyakonov-Perel spin relaxation, spin lifetimes are expected to be very long. Because of the giant spin splittings, the studied materials have great potential in spintronics applications.en
dc.language.isoenen
dc.publisherAmerican Physical Society (APS)en
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevB.84.153402en
dc.rightsArchived with thanks to Physical Review Ben
dc.titleGiant spin-orbit-induced spin splitting in two-dimensional transition-metal dichalcogenide semiconductorsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentComputational Physics and Materials Science (CPMS)en
dc.identifier.journalPhysical Review Ben
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionInstitut für Physik, Universität Augsburg, 86135 Augsburg, Germanyen
dc.contributor.institutionSchool of Physics and CRANN, Trinity College, Dublin 2, Irelanden
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorZhu, Zhiyongen
kaust.authorCheng, Yingchunen
kaust.authorSchwingenschlögl, Udoen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.