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Article: Ab initio calculation of transverse spin current in graphene nanostructures

TitleAb initio calculation of transverse spin current in graphene nanostructures
Authors
KeywordsPhysics
Issue Date2009
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B: Condensed Matter and Materials Physics, 2009, v. 79 n. 16 article no. 165417 How to Cite?
AbstractWe report a theoretical analysis of transverse spin current in a four-probe graphene nanostructure in the absence of spin-orbit interaction and magnetic field. The nanostructure consists of a finite-size graphene sheet connected to the outside world by two zigzag graphene nanoribbons (GNR) and two armchair graphene nanoribbons, forming a cross-shaped two-dimensional device. Due to edge state induced magnetism at zigzag GNR boundaries, our result shows that a pure transverse spin current without an accompanying charge current is induced. We have calculated the transverse spin conductance by an atomic first-principles method where density-functional theory is carried out within the Keldysh nonequilibrium Green’s function framework.
Persistent Identifierhttp://hdl.handle.net/10722/80754
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, Ben_HK
dc.contributor.authorWang, Jen_HK
dc.contributor.authorGuo, Hen_HK
dc.date.accessioned2010-09-06T08:09:54Z-
dc.date.available2010-09-06T08:09:54Z-
dc.date.issued2009en_HK
dc.identifier.citationPhysical Review B: Condensed Matter and Materials Physics, 2009, v. 79 n. 16 article no. 165417en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80754-
dc.description.abstractWe report a theoretical analysis of transverse spin current in a four-probe graphene nanostructure in the absence of spin-orbit interaction and magnetic field. The nanostructure consists of a finite-size graphene sheet connected to the outside world by two zigzag graphene nanoribbons (GNR) and two armchair graphene nanoribbons, forming a cross-shaped two-dimensional device. Due to edge state induced magnetism at zigzag GNR boundaries, our result shows that a pure transverse spin current without an accompanying charge current is induced. We have calculated the transverse spin conductance by an atomic first-principles method where density-functional theory is carried out within the Keldysh nonequilibrium Green’s function framework.-
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.relation.ispartofPhysical Review B: Condensed Matter and Materials Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review B: Condensed Matter and Materials Physics. Copyright © American Physical Society.en_HK
dc.subjectPhysics-
dc.titleAb initio calculation of transverse spin current in graphene nanostructuresen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=79&issue=16&spage=165417&epage=&date=2009&atitle=Ab+initio+calculation+of+transverse+spin+current+in+graphene+nanostructuresen_HK
dc.identifier.emailWang, J: jianwang@hkusub.hku.hken_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevB.79.165417-
dc.identifier.scopuseid_2-s2.0-65649090676-
dc.identifier.hkuros169489en_HK
dc.identifier.volume79-
dc.identifier.issue16 article no. 165417-
dc.identifier.isiWOS:000265945200095-
dc.identifier.citeulike4568313-

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