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Article: The sign of vortex charges in high temperature superconductors

TitleThe sign of vortex charges in high temperature superconductors
Authors
Issue Date2003
PublisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0022-2291
Citation
Journal Of Low Temperature Physics, 2003, v. 131 n. 3-4, p. 229-238 How to Cite?
AbstractBased on a widely adopted effective model Hamiltonian with competing antiferromagnetic (AF) and d-wave superconductivity (DSC) interactions, the vortex charge in high T c superconductors is investigated by solving self-consistently the Bogoliubov-de Gennes equations. The band parameters are chosen in such a way that the obtained local densities at and far away from the vortex center are in qualitative agreement with the STM measurements on YBCO. Both the hole-rich normal and electron-rich AF vortices are found, depending on the strength of induced AF order. The vortex charge is strongly influenced by the competing effects from the AF order and the DSC order at the vortex core. By tuning the on-site Coulomb repulsion U or the doping parameter δ, a transition between the positive and negative vortex charges may occur. Recent NMR and Hall effect experiments on vortex charges can be understood in terms of the present results. New imaging experiments should be able to probe the vortex charge directly.
Persistent Identifierhttp://hdl.handle.net/10722/80486
ISSN
2015 Impact Factor: 0.787
2015 SCImago Journal Rankings: 0.531
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChen, Yen_HK
dc.contributor.authorWang, ZDen_HK
dc.contributor.authorZhu, JXen_HK
dc.contributor.authorTing, CSen_HK
dc.date.accessioned2010-09-06T08:06:59Z-
dc.date.available2010-09-06T08:06:59Z-
dc.date.issued2003en_HK
dc.identifier.citationJournal Of Low Temperature Physics, 2003, v. 131 n. 3-4, p. 229-238en_HK
dc.identifier.issn0022-2291en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80486-
dc.description.abstractBased on a widely adopted effective model Hamiltonian with competing antiferromagnetic (AF) and d-wave superconductivity (DSC) interactions, the vortex charge in high T c superconductors is investigated by solving self-consistently the Bogoliubov-de Gennes equations. The band parameters are chosen in such a way that the obtained local densities at and far away from the vortex center are in qualitative agreement with the STM measurements on YBCO. Both the hole-rich normal and electron-rich AF vortices are found, depending on the strength of induced AF order. The vortex charge is strongly influenced by the competing effects from the AF order and the DSC order at the vortex core. By tuning the on-site Coulomb repulsion U or the doping parameter δ, a transition between the positive and negative vortex charges may occur. Recent NMR and Hall effect experiments on vortex charges can be understood in terms of the present results. New imaging experiments should be able to probe the vortex charge directly.en_HK
dc.languageengen_HK
dc.publisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0022-2291en_HK
dc.relation.ispartofJournal of Low Temperature Physicsen_HK
dc.titleThe sign of vortex charges in high temperature superconductorsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-2291&volume=131&spage=229&epage=238&date=2003&atitle=The+sign+of+vortex+charges+in+high+temperature+superconductorsen_HK
dc.identifier.emailWang, ZD: zwang@hkucc.hku.hken_HK
dc.identifier.authorityWang, ZD=rp00802en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1023/A:1022968917822en_HK
dc.identifier.scopuseid_2-s2.0-0037902120en_HK
dc.identifier.hkuros80649en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037902120&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume131en_HK
dc.identifier.issue3-4en_HK
dc.identifier.spage229en_HK
dc.identifier.epage238en_HK
dc.identifier.isiWOS:000181768000010-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridChen, Y=7601428042en_HK
dc.identifier.scopusauthoridWang, ZD=14828459100en_HK
dc.identifier.scopusauthoridZhu, JX=7405688302en_HK
dc.identifier.scopusauthoridTing, CS=7202187179en_HK

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