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Article: Finite size effects on helical edge states in a quantum spin-hall system

TitleFinite size effects on helical edge states in a quantum spin-hall system
Authors
Zhou, BLu, HZChu, RLShen, SQNiu, Q
Issue Date2008
PublisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.org
Citation
Physical Review Letters, 2008, v. 101 n. 24, article no. 246807 How to Cite?
DOI: http://dx.doi.org/10.1103/PhysRevLett.101.246807
AbstractThe hallmark of the spin-Hall insulator is the presence of gapless edge states of different spins moving in opposite directions. Through analytical solutions in a model calculation for a strip of finite width, we find that edge states on the two sides can couple together to produce a gap in the spectrum, destroying the quantum spin-Hall effect. The application of a magnetic field can however modify and even remove the gap by shifting the momenta of the edge states relative to each other. © 2008 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/59575
ISSN
0031-9007
2021 Impact Factor: 9.185
2020 SCImago Journal Rankings: 3.688
ISI Accession Number ID
WOS:000261704100048
Funding AgencyGrant Number
Research Grant Council of Hong KongHKU 7042/06P
Funding Information:

S. Q. S. thanks S. C. Zhang for helpful discussions. This work was supported by the Research Grant Council of Hong Kong under Grant No. HKU 7042/06P and the CRCG of the University of Hong Kong.

References
References in Scopus
Grants
Spin transverse force and its applications in quantum spin and charge transport

 

DC FieldValueLanguage
dc.contributor.authorZhou, Ben_HK
dc.contributor.authorLu, HZen_HK
dc.contributor.authorChu, RLen_HK
dc.contributor.authorShen, SQen_HK
dc.contributor.authorNiu, Qen_HK
dc.date.accessioned2010-05-31T03:53:05Z-
dc.date.available2010-05-31T03:53:05Z-
dc.date.issued2008en_HK
dc.identifier.citationPhysical Review Letters, 2008, v. 101 n. 24, article no. 246807-
dc.identifier.issn0031-9007en_HK
dc.identifier.urihttp://hdl.handle.net/10722/59575-
dc.description.abstractThe hallmark of the spin-Hall insulator is the presence of gapless edge states of different spins moving in opposite directions. Through analytical solutions in a model calculation for a strip of finite width, we find that edge states on the two sides can couple together to produce a gap in the spectrum, destroying the quantum spin-Hall effect. The application of a magnetic field can however modify and even remove the gap by shifting the momenta of the edge states relative to each other. © 2008 The American Physical Society.en_HK
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.orgen_HK
dc.relation.ispartofPhysical Review Lettersen_HK
dc.titleFinite size effects on helical edge states in a quantum spin-hall systemen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0031-9007&volume=101&spage=246807: 1&epage=4&date=2008&atitle=Finite+size+effects+on+helical+edge+states+in+a+quantum+spin-Hall+systemen_HK
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.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevLett.101.246807en_HK
dc.identifier.scopuseid_2-s2.0-57749119347en_HK
dc.identifier.hkuros154208en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-57749119347&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume101en_HK
dc.identifier.issue24en_HK
dc.identifier.spagearticle no. 246807-
dc.identifier.epagearticle no. 246807-
dc.identifier.eissn1079-7114-
dc.identifier.isiWOS:000261704100048-
dc.publisher.placeUnited Statesen_HK
dc.relation.projectSpin transverse force and its applications in quantum spin and charge transport-
dc.identifier.scopusauthoridZhou, B=7401906664en_HK
dc.identifier.scopusauthoridLu, HZ=24376662200en_HK
dc.identifier.scopusauthoridChu, RL=25925722300en_HK
dc.identifier.scopusauthoridShen, SQ=7403431266en_HK
dc.identifier.scopusauthoridNiu, Q=7006052653en_HK
dc.identifier.issnl0031-9007-

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