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Article: Berezinsky-Kosterlitz-Thouless transition in phase fluctuating superconductors with inhomogeneous Gaussian distributed couplings

TitleBerezinsky-Kosterlitz-Thouless transition in phase fluctuating superconductors with inhomogeneous Gaussian distributed couplings
Authors
KeywordsD. Phase transitions
D. Superconductivity
D. Thermodynamic properties
Issue Date2011
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jpcs
Citation
Journal Of Physics And Chemistry Of Solids, 2011, v. 72 n. 5, p. 388-391 How to Cite?
AbstractWithin the framework of phase fluctuation picture for the pseudogap state of cuprate superconductors, we study the effects of both spatial inhomogeneity of coupling strength and thermal phase fluctuations on the superconducting transition temperature. Such a Berezinsky-Kosterlitz-Thouless (BKT) transition is characterized by a two-dimensional (2D) classical XY model, in which the bond coupling is assumed to be roughly proportional to the superconducting bond order parameter. In recent STM experiments with lattice-tracking spectroscopy technique, a Gaussian-like spatially distributed pairing strength is observed. Our Monte Carlo simulations using Wolff cluster update on such 2D classical XY model, in which the bond coupling obeys a similar spatial Gaussian distribution, indicate that the enhancement of the variance of Gaussian distribution may suppress the BKT transition temperature. In addition, we calculate the related physical quantities, including the spin stiffness, free energy, specific heat, magnetization and magnetic susceptibility, by changing the inhomogeneity variance. © 2010 Elsevier Ltd.All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/139628
ISSN
2015 Impact Factor: 2.048
2015 SCImago Journal Rankings: 0.639
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChen, Cen_HK
dc.contributor.authorChen, Cen_HK
dc.contributor.authorChen, Yen_HK
dc.contributor.authorWang, ZDen_HK
dc.date.accessioned2011-09-23T05:52:45Z-
dc.date.available2011-09-23T05:52:45Z-
dc.date.issued2011en_HK
dc.identifier.citationJournal Of Physics And Chemistry Of Solids, 2011, v. 72 n. 5, p. 388-391en_HK
dc.identifier.issn0022-3697en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139628-
dc.description.abstractWithin the framework of phase fluctuation picture for the pseudogap state of cuprate superconductors, we study the effects of both spatial inhomogeneity of coupling strength and thermal phase fluctuations on the superconducting transition temperature. Such a Berezinsky-Kosterlitz-Thouless (BKT) transition is characterized by a two-dimensional (2D) classical XY model, in which the bond coupling is assumed to be roughly proportional to the superconducting bond order parameter. In recent STM experiments with lattice-tracking spectroscopy technique, a Gaussian-like spatially distributed pairing strength is observed. Our Monte Carlo simulations using Wolff cluster update on such 2D classical XY model, in which the bond coupling obeys a similar spatial Gaussian distribution, indicate that the enhancement of the variance of Gaussian distribution may suppress the BKT transition temperature. In addition, we calculate the related physical quantities, including the spin stiffness, free energy, specific heat, magnetization and magnetic susceptibility, by changing the inhomogeneity variance. © 2010 Elsevier Ltd.All rights reserved.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/jpcsen_HK
dc.relation.ispartofJournal of Physics and Chemistry of Solidsen_HK
dc.subjectD. Phase transitionsen_HK
dc.subjectD. Superconductivityen_HK
dc.subjectD. Thermodynamic propertiesen_HK
dc.titleBerezinsky-Kosterlitz-Thouless transition in phase fluctuating superconductors with inhomogeneous Gaussian distributed couplingsen_HK
dc.typeArticleen_HK
dc.identifier.emailWang, ZD: zwang@hkucc.hku.hken_HK
dc.identifier.authorityWang, ZD=rp00802en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jpcs.2010.10.061en_HK
dc.identifier.scopuseid_2-s2.0-79955758311en_HK
dc.identifier.hkuros195363en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79955758311&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume72en_HK
dc.identifier.issue5en_HK
dc.identifier.spage388en_HK
dc.identifier.epage391en_HK
dc.identifier.isiWOS:000291518100020-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridChen, C=38460917700en_HK
dc.identifier.scopusauthoridChen, C=36914805000en_HK
dc.identifier.scopusauthoridChen, Y=35241869000en_HK
dc.identifier.scopusauthoridWang, ZD=14828459100en_HK
dc.identifier.citeulike8065063-

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