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Article: Nuclear spin relaxation rate of disordered p x+ip y-wave superconductors

TitleNuclear spin relaxation rate of disordered p x+ip y-wave superconductors
Authors
KeywordsPhysics
Issue Date2004
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2004, v. 70 n. 18, p. 1-4 How to Cite?
AbstractBased on an effective Hamiltonian with the binary alloy disorder model defined in the triangular lattice, the impurity scattering effects on the density of states and especially on the spin-lattice relaxation rate 1/T 1 of p x+ip y-wave superconductors are studied by solving numerically the Bogoliubov-de Gennes equations. In the clean limit, the coherence peak of 1/T 1 is observed as expected. More intriguingly, for strong scattering potential, the temperature dependence of 1/T 1 exhibits the two different power-law behaviors near T c and at low temperatures, respectively, which is qualitatively consistent with the nuclear quadrupolar resonance measurement of the newly discovered superconductor Na xCoO 2·yH 2O (x=0.35). We argue that the disorder effect plays an important role in the thermodynamic properties of the p x+ip y-wave pairing state as indicated in this paper, as well as other superconducting states with unconventional pairing symmetries. Therefore further experimental exploration is expected to determine the actual pairing symmetry of this material.
Persistent Identifierhttp://hdl.handle.net/10722/43442
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHan, Qen_HK
dc.contributor.authorWang, ZDen_HK
dc.date.accessioned2007-03-23T04:45:46Z-
dc.date.available2007-03-23T04:45:46Z-
dc.date.issued2004en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2004, v. 70 n. 18, p. 1-4en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43442-
dc.description.abstractBased on an effective Hamiltonian with the binary alloy disorder model defined in the triangular lattice, the impurity scattering effects on the density of states and especially on the spin-lattice relaxation rate 1/T 1 of p x+ip y-wave superconductors are studied by solving numerically the Bogoliubov-de Gennes equations. In the clean limit, the coherence peak of 1/T 1 is observed as expected. More intriguingly, for strong scattering potential, the temperature dependence of 1/T 1 exhibits the two different power-law behaviors near T c and at low temperatures, respectively, which is qualitatively consistent with the nuclear quadrupolar resonance measurement of the newly discovered superconductor Na xCoO 2·yH 2O (x=0.35). We argue that the disorder effect plays an important role in the thermodynamic properties of the p x+ip y-wave pairing state as indicated in this paper, as well as other superconducting states with unconventional pairing symmetries. Therefore further experimental exploration is expected to determine the actual pairing symmetry of this material.en_HK
dc.format.extent78944 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 B - Condensed Matter and Materials Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.en_HK
dc.subjectPhysicsen_HK
dc.titleNuclear spin relaxation rate of disordered p x+ip y-wave superconductorsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=70&issue=18&spage=184504:1&epage=4&date=2004&atitle=Nuclear+spin+relaxation+rate+of+disordered+px+++ipy-wave+superconductorsen_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.70.184504en_HK
dc.identifier.scopuseid_2-s2.0-12144276194en_HK
dc.identifier.hkuros96484-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-12144276194&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume70en_HK
dc.identifier.issue18en_HK
dc.identifier.spage1en_HK
dc.identifier.epage4en_HK
dc.identifier.isiWOS:000225477300100-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridHan, Q=7202485348en_HK
dc.identifier.scopusauthoridWang, ZD=14828459100en_HK

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