File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Current-induced spin polarization in a two-dimensional hole gas

TitleCurrent-induced spin polarization in a two-dimensional hole gas
Authors
Issue Date2008
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2008, v. 77 n. 12 How to Cite?
Abstract
We investigate the current-induced spin polarization in the two-dimensional hole gas (2DHG) with the structure inversion asymmetry. By using the perturbation theory, we rederive the effective k -cubic Rashba Hamiltonian for 2DHG and the generalized spin operators accordingly. Then based on the linear response theory, we analytically and numerically calculate the current-induced spin polarization with the disorder effect considered. We have found that, quite different from the two-dimensional electron gas, the spin polarization in 2DHG linearly depends on Fermi energy in the low-doping regime, and with increasing Fermi energy, the spin polarization may be suppressed and even changes its sign. We predict a pronounced peak of the spin polarization in 2DHG once the Fermi level is somewhere between the minimum points of two spin-split branches of the lowest light-hole subband. We discuss the possibility of measurements in experiments as regards the temperature and the width of quantum wells. © 2008 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/80771
ISSN
2013 Impact Factor: 3.664
2013 SCImago Journal Rankings: 2.143
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLiu, CXen_HK
dc.contributor.authorZhou, Ben_HK
dc.contributor.authorShen, SQen_HK
dc.contributor.authorZhu, BFen_HK
dc.date.accessioned2010-09-06T08:10:05Z-
dc.date.available2010-09-06T08:10:05Z-
dc.date.issued2008en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2008, v. 77 n. 12en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80771-
dc.description.abstractWe investigate the current-induced spin polarization in the two-dimensional hole gas (2DHG) with the structure inversion asymmetry. By using the perturbation theory, we rederive the effective k -cubic Rashba Hamiltonian for 2DHG and the generalized spin operators accordingly. Then based on the linear response theory, we analytically and numerically calculate the current-induced spin polarization with the disorder effect considered. We have found that, quite different from the two-dimensional electron gas, the spin polarization in 2DHG linearly depends on Fermi energy in the low-doping regime, and with increasing Fermi energy, the spin polarization may be suppressed and even changes its sign. We predict a pronounced peak of the spin polarization in 2DHG once the Fermi level is somewhere between the minimum points of two spin-split branches of the lowest light-hole subband. We discuss the possibility of measurements in experiments as regards the temperature and the width of quantum wells. © 2008 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.titleCurrent-induced spin polarization in a two-dimensional hole gasen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=77&spage=125345: 1&epage=13&date=2008&atitle=Current-induced+spin+polarization+in+a+two-dimensional+hole+gasen_HK
dc.identifier.emailShen, SQ: sshen@hkucc.hku.hken_HK
dc.identifier.authorityShen, SQ=rp00775en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevB.77.125345en_HK
dc.identifier.scopuseid_2-s2.0-41549142211en_HK
dc.identifier.hkuros145579en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-41549142211&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume77en_HK
dc.identifier.issue12en_HK
dc.identifier.isiWOS:000254543000117-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLiu, CX=26659930800en_HK
dc.identifier.scopusauthoridZhou, B=7401906664en_HK
dc.identifier.scopusauthoridShen, SQ=7403431266en_HK
dc.identifier.scopusauthoridZhu, BF=7401683321en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats