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Article: SU(4) spin-orbital two-leg ladder, square, and triangle lattices

TitleSU(4) spin-orbital two-leg ladder, square, and triangle lattices
Authors
KeywordsPhysics
Issue Date2002
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2002, v. 66 n. 21, p. 2145161-2145165 How to Cite?
AbstractBased on the generalized valence bond picture, a Schwinger boson mean-field theory is applied to the symmetric SU(4) spin-orbital systems. For a two-leg SU(4) ladder, the ground state is a spin-orbital liquid with a finite energy gap, in good agreement with recent numerical calculations. In two-dimensional square and triangle lattices, the SU(4) Schwinger bosons condense at (τ/2,τ/2) and (τ/3,τ/3), respectively. Spin, orbital, and coupled spin-orbital static susceptibilities become singular at the wave vectors; the Bose condensation arises at twice this value. It is also demonstrated that there are spin, orbital, and coupled spin-orbital long-range orderings in the ground state.
Persistent Identifierhttp://hdl.handle.net/10722/43372
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorShen, SQen_HK
dc.date.accessioned2007-03-23T04:44:28Z-
dc.date.available2007-03-23T04:44:28Z-
dc.date.issued2002en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2002, v. 66 n. 21, p. 2145161-2145165en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43372-
dc.description.abstractBased on the generalized valence bond picture, a Schwinger boson mean-field theory is applied to the symmetric SU(4) spin-orbital systems. For a two-leg SU(4) ladder, the ground state is a spin-orbital liquid with a finite energy gap, in good agreement with recent numerical calculations. In two-dimensional square and triangle lattices, the SU(4) Schwinger bosons condense at (τ/2,τ/2) and (τ/3,τ/3), respectively. Spin, orbital, and coupled spin-orbital static susceptibilities become singular at the wave vectors; the Bose condensation arises at twice this value. It is also demonstrated that there are spin, orbital, and coupled spin-orbital long-range orderings in the ground state.en_HK
dc.format.extent70662 bytes-
dc.format.extent34304 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
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.titleSU(4) spin-orbital two-leg ladder, square, and triangle latticesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=66&issue=21&spage=214516:1&epage=5&date=2002&atitle=SU(4)+spin-orbital+two-leg+ladder,+square,+and+triangle+latticesen_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.66.214516en_HK
dc.identifier.scopuseid_2-s2.0-0036975305en_HK
dc.identifier.hkuros75848-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036975305&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume66en_HK
dc.identifier.issue21en_HK
dc.identifier.spage2145161en_HK
dc.identifier.epage2145165en_HK
dc.identifier.isiWOS:000180318800093-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridShen, SQ=7403431266en_HK

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