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Article: Competition between weak localization and antilocalization in topological surface states

TitleCompetition between weak localization and antilocalization in topological surface states
Authors
KeywordsAntilocalization
Competing effects
Dirac point
Magnetic scattering
Magneto-conductivity
Issue Date2011
PublisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.org
Citation
Physical Review Letters, 2011, v. 107 n. 7 How to Cite?
AbstractA magnetoconductivity formula is presented for the surface states of a magnetically doped topological insulator. It reveals a competing effect of weak localization and weak antilocalization in quantum transport when an energy gap is opened at the Dirac point by magnetic doping. It is found that, while random magnetic scattering always drives the system from the symplectic to the unitary class, the gap could induce a crossover from weak antilocalization to weak localization, tunable by the Fermi energy or the gap. This crossover presents a unique feature characterizing the surface states of a topological insulator with the gap opened at the Dirac point in the quantum diffusion regime. © 2011 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/139660
ISSN
2015 Impact Factor: 7.645
2015 SCImago Journal Rankings: 3.731
ISI Accession Number ID
Funding AgencyGrant Number
Research Grant Council of Hong KongHKU 7051/10P
HKUST3/CRF/09
NSFC10734110
973 program of China2009CB929101
Funding Information:

We thank H. T. He, J. N. Wang, F. C. Zhang, W. Q. Chen, X. Dai, and B. Zhou for helpful discussions. Hai-Zhou also thanks K. Imura and H. Suzuura for stimulating discussions. This work is supported by the Research Grant Council of Hong Kong under Grants No. HKU 7051/10P and No. HKUST3/CRF/09. Junren is supported by NSFC No. 10734110 and 973 program of China No. 2009CB929101.

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorLu, HZen_HK
dc.contributor.authorShi, Jen_HK
dc.contributor.authorShen, SQen_HK
dc.date.accessioned2011-09-23T05:53:01Z-
dc.date.available2011-09-23T05:53:01Z-
dc.date.issued2011en_HK
dc.identifier.citationPhysical Review Letters, 2011, v. 107 n. 7en_HK
dc.identifier.issn0031-9007en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139660-
dc.description.abstractA magnetoconductivity formula is presented for the surface states of a magnetically doped topological insulator. It reveals a competing effect of weak localization and weak antilocalization in quantum transport when an energy gap is opened at the Dirac point by magnetic doping. It is found that, while random magnetic scattering always drives the system from the symplectic to the unitary class, the gap could induce a crossover from weak antilocalization to weak localization, tunable by the Fermi energy or the gap. This crossover presents a unique feature characterizing the surface states of a topological insulator with the gap opened at the Dirac point in the quantum diffusion regime. © 2011 American Physical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.orgen_HK
dc.relation.ispartofPhysical Review Lettersen_HK
dc.rightsPhysical Review Letters. Copyright © American Physical Society.en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectAntilocalization-
dc.subjectCompeting effects-
dc.subjectDirac point-
dc.subjectMagnetic scattering-
dc.subjectMagneto-conductivity-
dc.titleCompetition between weak localization and antilocalization in topological surface statesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0031-9007&volume=107&issue=7, article no. 076801&spage=&epage=&date=2011&atitle=Competition+between+weak+localization+and+antilocalization+in+topological+surface+states-
dc.identifier.emailLu, HZ: luhz@hku.hken_HK
dc.identifier.emailShen, SQ: sshen@hkucc.hku.hken_HK
dc.identifier.authorityLu, HZ=rp01599en_HK
dc.identifier.authorityShen, SQ=rp00775en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevLett.107.076801en_HK
dc.identifier.pmid21902413-
dc.identifier.scopuseid_2-s2.0-80051502960en_HK
dc.identifier.hkuros195705en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80051502960&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume107en_HK
dc.identifier.issue7en_HK
dc.identifier.eissn1079-7114-
dc.identifier.isiWOS:000293622200002-
dc.publisher.placeUnited Statesen_HK
dc.relation.projectQuantum Order in Novel Materials: Superconductivity and Topological Order-
dc.relation.projectQuantum Order in Novel Materials: Superconductivity and Topological Order-
dc.relation.projectQuantum Order in Novel Materials: Superconductivity and Topological Order-
dc.identifier.scopusauthoridLu, HZ=24376662200en_HK
dc.identifier.scopusauthoridShi, J=7404494854en_HK
dc.identifier.scopusauthoridShen, SQ=7403431266en_HK

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