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Article: Spiral state and persistent spin current in a system with strong Hund coupling

TitleSpiral state and persistent spin current in a system with strong Hund coupling
Authors
Issue Date1997
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/physleta
Citation
Physics Letters, Section A: General, Atomic And Solid State Physics, 1997, v. 235 n. 4, p. 403-407 How to Cite?
AbstractAn effective Hamiltonian for systems with strong Hund coupling is presented, which contains a novel type of interaction between the spin current operator and the curl of two localised spins. We obtain a solution in the case that localised spins form a spiral state. In this state there exists a persistent spin current, but no electric current. In the equilibrium case, the spiral state can only exist in a one-dimensional ring or another circuit form. Our finding rules out the spiral state as a stable magnetic structure in a one-dimensional open chain or higher-dimensional system with strong Hund coupling. A possible experiment which could verify or falsify the assumption of strong Hund coupling is proposed. © 1997 Elsevier Science B.V.
Persistent Identifierhttp://hdl.handle.net/10722/174839
ISSN
2015 Impact Factor: 1.677
2015 SCImago Journal Rankings: 0.755
References

 

DC FieldValueLanguage
dc.contributor.authorShen, SQen_US
dc.date.accessioned2012-11-26T08:47:45Z-
dc.date.available2012-11-26T08:47:45Z-
dc.date.issued1997en_US
dc.identifier.citationPhysics Letters, Section A: General, Atomic And Solid State Physics, 1997, v. 235 n. 4, p. 403-407en_US
dc.identifier.issn0375-9601en_US
dc.identifier.urihttp://hdl.handle.net/10722/174839-
dc.description.abstractAn effective Hamiltonian for systems with strong Hund coupling is presented, which contains a novel type of interaction between the spin current operator and the curl of two localised spins. We obtain a solution in the case that localised spins form a spiral state. In this state there exists a persistent spin current, but no electric current. In the equilibrium case, the spiral state can only exist in a one-dimensional ring or another circuit form. Our finding rules out the spiral state as a stable magnetic structure in a one-dimensional open chain or higher-dimensional system with strong Hund coupling. A possible experiment which could verify or falsify the assumption of strong Hund coupling is proposed. © 1997 Elsevier Science B.V.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/physletaen_US
dc.relation.ispartofPhysics Letters, Section A: General, Atomic and Solid State Physicsen_US
dc.titleSpiral state and persistent spin current in a system with strong Hund couplingen_US
dc.typeArticleen_US
dc.identifier.emailShen, SQ: sshen@hkucc.hku.hken_US
dc.identifier.authorityShen, SQ=rp00775en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0037648248en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037648248&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume235en_US
dc.identifier.issue4en_US
dc.identifier.spage403en_US
dc.identifier.epage407en_US
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridShen, SQ=7403431266en_US

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