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Article: Effects of geometric Berry phase on persistent currents in large-U one-dimensional Hubbard rings

TitleEffects of geometric Berry phase on persistent currents in large-U one-dimensional Hubbard rings
Authors
KeywordsPhysics
Issue Date1995
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B, 1995, v. 52 n. 20, p. 14505-14510 How to Cite?
AbstractBy using the Bethe-Yang ansatz within the framework of the tight-binding model, the ground-state energy and the pesistent current in one-dimensional Hubbard rings are calculated in the presence of an AB flux accompanied by a local magnetic field whose direction varies in space. Analytical result are obtained for large-U limit. It is indicated that there usaually exists no short periodicity for the ground-state energy and persistent current due to the effect of the geometric Berry phase even for the case of infinite U. In a special case, the short periodicity retained in the zero-order approximation is broken down by taking into account the first-order energy correction for large but not infinite U. Moreover, it is found that in the strong-coupling limit, the electron-electron interaction suppresses the persistent current, which is in agreement with other numerical calculations. © 1995 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/43379
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhu, JXen_HK
dc.contributor.authorWang, ZDen_HK
dc.contributor.authorSheng, Len_HK
dc.date.accessioned2007-03-23T04:44:35Z-
dc.date.available2007-03-23T04:44:35Z-
dc.date.issued1995en_HK
dc.identifier.citationPhysical Review B, 1995, v. 52 n. 20, p. 14505-14510en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43379-
dc.description.abstractBy using the Bethe-Yang ansatz within the framework of the tight-binding model, the ground-state energy and the pesistent current in one-dimensional Hubbard rings are calculated in the presence of an AB flux accompanied by a local magnetic field whose direction varies in space. Analytical result are obtained for large-U limit. It is indicated that there usaually exists no short periodicity for the ground-state energy and persistent current due to the effect of the geometric Berry phase even for the case of infinite U. In a special case, the short periodicity retained in the zero-order approximation is broken down by taking into account the first-order energy correction for large but not infinite U. Moreover, it is found that in the strong-coupling limit, the electron-electron interaction suppresses the persistent current, which is in agreement with other numerical calculations. © 1995 The American Physical Society.en_HK
dc.format.extent867501 bytes-
dc.format.extent45056 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 Ben_HK
dc.rightsPhysical Review B (Condensed Matter). Copyright © American Physical Society.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysicsen_HK
dc.titleEffects of geometric Berry phase on persistent currents in large-U one-dimensional Hubbard ringsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0163-1829&volume=52&issue=20&spage=14505&epage=14510&date=1995&atitle=Effect+of+geometric+Berry+phase+on+persistent+currents+in+large-U+one-dimensional+Hubbard+ringsen_HK
dc.identifier.emailWang, ZD: zwang@hkucc.hku.hken_HK
dc.identifier.authorityWang, ZD=rp00802en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.52.14505en_HK
dc.identifier.scopuseid_2-s2.0-0001683963en_HK
dc.identifier.hkuros7660-
dc.identifier.volume52en_HK
dc.identifier.issue20en_HK
dc.identifier.spage14505en_HK
dc.identifier.epage14510en_HK
dc.identifier.isiWOS:A1995TH68200036-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZhu, JX=7405688302en_HK
dc.identifier.scopusauthoridWang, ZD=14828459100en_HK
dc.identifier.scopusauthoridSheng, L=7102436395en_HK
dc.identifier.citeulike7507025-

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