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Article: SU(2) × U(1) unified theory for charge, orbit and spin currents

TitleSU(2) × U(1) unified theory for charge, orbit and spin currents
Authors
Issue Date2006
PublisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/jpa
Citation
Journal Of Physics A: Mathematical And General, 2006, v. 39 n. 22, p. 7115-7123 How to Cite?
AbstractSpin and charge currents in systems with Rashba or Dresselhaus spin-orbit couplings are formulated in a unified version of four-dimensional SU(2) × U(1) gauge theory, with U(1) being the Maxwell field and SU(2) being the Yang-Mills field. While the bare spin current is non-conserved, it is compensated by a contribution from the SU(2) gauge field, which gives rise to a spin torque in the spin transport, consistent with the semi-classical theory of Culcer et al. Orbit current is shown to be non-conserved in the presence of electromagnetic fields. Similar to the Maxwell field inducing forces on charge and charge current, we derive forces acting on spin and spin current induced by the Yang-Mills fields such as the Rashba and Dresselhaus fields and the sheer strain field. The spin density and spin current may be considered as a source generating Yang-Mills field in certain condensed matter systems. © 2006 IOP Publishing Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/175012
ISSN
2006 Impact Factor: 1.577
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorJin, PQen_US
dc.contributor.authorLi, YQen_US
dc.contributor.authorZhang, FCen_US
dc.date.accessioned2012-11-26T08:48:46Z-
dc.date.available2012-11-26T08:48:46Z-
dc.date.issued2006en_US
dc.identifier.citationJournal Of Physics A: Mathematical And General, 2006, v. 39 n. 22, p. 7115-7123en_US
dc.identifier.issn0305-4470en_US
dc.identifier.urihttp://hdl.handle.net/10722/175012-
dc.description.abstractSpin and charge currents in systems with Rashba or Dresselhaus spin-orbit couplings are formulated in a unified version of four-dimensional SU(2) × U(1) gauge theory, with U(1) being the Maxwell field and SU(2) being the Yang-Mills field. While the bare spin current is non-conserved, it is compensated by a contribution from the SU(2) gauge field, which gives rise to a spin torque in the spin transport, consistent with the semi-classical theory of Culcer et al. Orbit current is shown to be non-conserved in the presence of electromagnetic fields. Similar to the Maxwell field inducing forces on charge and charge current, we derive forces acting on spin and spin current induced by the Yang-Mills fields such as the Rashba and Dresselhaus fields and the sheer strain field. The spin density and spin current may be considered as a source generating Yang-Mills field in certain condensed matter systems. © 2006 IOP Publishing Ltd.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/jpaen_US
dc.relation.ispartofJournal of Physics A: Mathematical and Generalen_US
dc.titleSU(2) × U(1) unified theory for charge, orbit and spin currentsen_US
dc.typeArticleen_US
dc.identifier.emailZhang, FC: fuchun@hkucc.hku.hken_US
dc.identifier.authorityZhang, FC=rp00840en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1088/0305-4470/39/22/022en_US
dc.identifier.scopuseid_2-s2.0-33646857047en_US
dc.identifier.hkuros116731-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33646857047&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume39en_US
dc.identifier.issue22en_US
dc.identifier.spage7115en_US
dc.identifier.epage7123en_US
dc.identifier.isiWOS:000238536800027-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridJin, PQ=13612716600en_US
dc.identifier.scopusauthoridLi, YQ=7502084929en_US
dc.identifier.scopusauthoridZhang, FC=14012468800en_US
dc.identifier.citeulike661772-

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