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Article: Spin-orbit scattering in quantum diffusion of massive Dirac fermions

TitleSpin-orbit scattering in quantum diffusion of massive Dirac fermions
Authors
Issue Date2012
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2012, v. 86 n. 12 How to Cite?
AbstractWe theoretically study the effects of spin-orbit scattering on weak (anti)localization in two-dimensional massive Dirac systems. We clarify that weak antilocalization and localization of a single massive Dirac cone come from the diffusion of a singlet Cooperon in the massless limit and one of triplet Cooperons in the large-mass limit, respectively. Spin-orbit scattering behaves like random magnetic scattering to the triplet Cooperon, and suppresses the weak localization in the large-mass regime, different from in conventional systems where spin-orbit scattering leads to a crossover from weak localization to antilocalization. This behavior suggests an experiment to detect the weak localization of bulk subbands in topological insulator thin films, in which an enhancement of "weak antilocalization" is expected after doping heavy-element impurities. Finally, we compare the conventional electron and Dirac fermion systems in the quantum diffusion transport under ordinary, spin-orbit, and magnetic scattering. © 2012 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/175220
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorShan, WYen_US
dc.contributor.authorLu, HZen_US
dc.contributor.authorShen, SQen_US
dc.date.accessioned2012-11-26T08:54:57Z-
dc.date.available2012-11-26T08:54:57Z-
dc.date.issued2012en_US
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2012, v. 86 n. 12en_US
dc.identifier.issn1098-0121en_US
dc.identifier.urihttp://hdl.handle.net/10722/175220-
dc.description.abstractWe theoretically study the effects of spin-orbit scattering on weak (anti)localization in two-dimensional massive Dirac systems. We clarify that weak antilocalization and localization of a single massive Dirac cone come from the diffusion of a singlet Cooperon in the massless limit and one of triplet Cooperons in the large-mass limit, respectively. Spin-orbit scattering behaves like random magnetic scattering to the triplet Cooperon, and suppresses the weak localization in the large-mass regime, different from in conventional systems where spin-orbit scattering leads to a crossover from weak localization to antilocalization. This behavior suggests an experiment to detect the weak localization of bulk subbands in topological insulator thin films, in which an enhancement of "weak antilocalization" is expected after doping heavy-element impurities. Finally, we compare the conventional electron and Dirac fermion systems in the quantum diffusion transport under ordinary, spin-orbit, and magnetic scattering. © 2012 American Physical Society.en_US
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_US
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physicsen_US
dc.rightsPhysical Review B. Copyright © American Physical Society.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleSpin-orbit scattering in quantum diffusion of massive Dirac fermionsen_US
dc.typeArticleen_US
dc.identifier.emailLu, HZ: luhz@hku.hken_US
dc.identifier.authorityLu, HZ=rp01599en_US
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1103/PhysRevB.86.125303en_US
dc.identifier.scopuseid_2-s2.0-84866393162en_US
dc.identifier.hkuros212601-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84866393162&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume86en_US
dc.identifier.issue12en_US
dc.identifier.isiWOS:000308288700009-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridShan, WY=36093352700en_US
dc.identifier.scopusauthoridLu, HZ=24376662200en_US
dc.identifier.scopusauthoridShen, SQ=54941637500en_US

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