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Article: Electric-field-induced resonant spin polarization in a two-dimensional electron gas

TitleElectric-field-induced resonant spin polarization in a two-dimensional electron gas
Authors
KeywordsPhysics
Issue Date2007
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2007, v. 76 n. 4 How to Cite?
AbstractElectric response of spin polarization in two-dimensional electron gas with structural inversion asymmetry or Rashba spin-orbit coupling subjected to a magnetic field was studied by means of the linear response theory and numerical simulation with the disorder effect. It was found that an electric resonant response of spin polarization occurs when the Fermi surface is located near the crossing of two Landau levels, which is induced from the competition between the spin-orbit coupling and Zeeman splitting. The scaling behavior was investigated with a simplified two-level model, and the height of the resonant peak is reciprocally proportional to the electric field at low temperatures and to temperature for finite electric fields, respectively. Finally, numerical simulation illustrated that impurity potential opens an energy gap near the resonant point and suppresses the effect gradually with increasing strength of disorder. This resonant effect may provide an efficient way to control spin polarization by an external electric field. © 2007 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/57341
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBao, YJen_HK
dc.contributor.authorShen, SQen_HK
dc.date.accessioned2010-04-12T01:33:32Z-
dc.date.available2010-04-12T01:33:32Z-
dc.date.issued2007en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2007, v. 76 n. 4en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/57341-
dc.description.abstractElectric response of spin polarization in two-dimensional electron gas with structural inversion asymmetry or Rashba spin-orbit coupling subjected to a magnetic field was studied by means of the linear response theory and numerical simulation with the disorder effect. It was found that an electric resonant response of spin polarization occurs when the Fermi surface is located near the crossing of two Landau levels, which is induced from the competition between the spin-orbit coupling and Zeeman splitting. The scaling behavior was investigated with a simplified two-level model, and the height of the resonant peak is reciprocally proportional to the electric field at low temperatures and to temperature for finite electric fields, respectively. Finally, numerical simulation illustrated that impurity potential opens an energy gap near the resonant point and suppresses the effect gradually with increasing strength of disorder. This resonant effect may provide an efficient way to control spin polarization by an external electric field. © 2007 The American Physical Society.en_HK
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.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysicsen_HK
dc.titleElectric-field-induced resonant spin polarization in a two-dimensional electron gasen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=76&issue=4&spage=045313&epage=1 &date=2007&atitle=Electric-field-induced+resonant+spin+polarization+in+a+two-dimensional+electron+gasen_HK
dc.identifier.emailShen, SQ: sshen@hkucc.hku.hken_HK
dc.identifier.authorityShen, SQ=rp00775en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.76.045313en_HK
dc.identifier.scopuseid_2-s2.0-34447310044en_HK
dc.identifier.hkuros137001-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34447310044&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume76en_HK
dc.identifier.issue4en_HK
dc.identifier.isiWOS:000248540000066-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridBao, YJ=9743017000en_HK
dc.identifier.scopusauthoridShen, SQ=7403431266en_HK

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