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Article: Spiral state and persistent spin current in a system with strong Hund coupling
Title | Spiral state and persistent spin current in a system with strong Hund coupling |
---|---|
Authors | |
Issue Date | 1997 |
Publisher | Elsevier 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? |
Abstract | An 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 Identifier | http://hdl.handle.net/10722/174839 |
ISSN | 2023 Impact Factor: 2.3 2023 SCImago Journal Rankings: 0.483 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shen, SQ | en_US |
dc.date.accessioned | 2012-11-26T08:47:45Z | - |
dc.date.available | 2012-11-26T08:47:45Z | - |
dc.date.issued | 1997 | en_US |
dc.identifier.citation | Physics Letters, Section A: General, Atomic And Solid State Physics, 1997, v. 235 n. 4, p. 403-407 | en_US |
dc.identifier.issn | 0375-9601 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/174839 | - |
dc.description.abstract | An 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.language | eng | en_US |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/physleta | en_US |
dc.relation.ispartof | Physics Letters, Section A: General, Atomic and Solid State Physics | en_US |
dc.title | Spiral state and persistent spin current in a system with strong Hund coupling | en_US |
dc.type | Article | en_US |
dc.identifier.email | Shen, SQ: sshen@hkucc.hku.hk | en_US |
dc.identifier.authority | Shen, SQ=rp00775 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.scopus | eid_2-s2.0-0037648248 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0037648248&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 235 | en_US |
dc.identifier.issue | 4 | en_US |
dc.identifier.spage | 403 | en_US |
dc.identifier.epage | 407 | en_US |
dc.identifier.isi | WOS:A1997YD64600016 | - |
dc.publisher.place | Netherlands | en_US |
dc.identifier.scopusauthorid | Shen, SQ=7403431266 | en_US |
dc.identifier.issnl | 0375-9601 | - |