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Article: Deduction of pure spin current from the linear and circular spin photogalvanic effect in semiconductor quantum wells

TitleDeduction of pure spin current from the linear and circular spin photogalvanic effect in semiconductor quantum wells
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. 75 n. 4 How to Cite?
AbstractWe study the spin photogalvanic effect in a two-dimensional electron system with structure-inversion asymmetry by means of solution of the semiconductor optical Bloch equations. It is shown that linearly polarized light may inject a pure spin current into spin-splitting conduction bands due to Rashba spin-orbit coupling, while circularly polarized light may inject a spin-dependent photocurrent. We establish an explicit relation between the photocurrent caused by oblique incidence of circularly polarized light and the pure spin current caused by normal incidence of linearly polarized light such that we can deduce the amplitude of the spin current from the experimentally measured spin photocurrent. This method may provide a source of spin current to study spin transport in semiconductors quantitatively. © 2007 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/45275
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhou, Ben_HK
dc.contributor.authorShen, SQen_HK
dc.date.accessioned2007-10-30T06:21:31Z-
dc.date.available2007-10-30T06:21:31Z-
dc.date.issued2007en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2007, v. 75 n. 4en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/45275-
dc.description.abstractWe study the spin photogalvanic effect in a two-dimensional electron system with structure-inversion asymmetry by means of solution of the semiconductor optical Bloch equations. It is shown that linearly polarized light may inject a pure spin current into spin-splitting conduction bands due to Rashba spin-orbit coupling, while circularly polarized light may inject a spin-dependent photocurrent. We establish an explicit relation between the photocurrent caused by oblique incidence of circularly polarized light and the pure spin current caused by normal incidence of linearly polarized light such that we can deduce the amplitude of the spin current from the experimentally measured spin photocurrent. This method may provide a source of spin current to study spin transport in semiconductors quantitatively. © 2007 The American Physical Society.en_HK
dc.format.extent373770 bytes-
dc.format.extent3582 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
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.titleDeduction of pure spin current from the linear and circular spin photogalvanic effect in semiconductor quantum wellsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=75&issue=4&spage=045339:1&epage=6&date=2007&atitle=Deduction+of+pure+spin+current+from+the+linear+and+circular+spin+photogalvanic+effect+in+semiconductor+quantum+wellsen_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.75.045339en_HK
dc.identifier.scopuseid_2-s2.0-33846469479en_HK
dc.identifier.hkuros128557-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33846469479&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume75en_HK
dc.identifier.issue4en_HK
dc.identifier.isiWOS:000243895600101-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZhou, B=7401906664en_HK
dc.identifier.scopusauthoridShen, SQ=7403431266en_HK

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