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Article: Phase coherence effect on the normal state internal friction in underdoped YBa2Cu3O7-δ

TitlePhase coherence effect on the normal state internal friction in underdoped YBa<inf>2</inf>Cu<inf>3</inf>O<inf>7-δ</inf>
Authors
Issue Date2000
Citation
Physica C: Superconductivity and its Applications, 2000, v. 337, n. 1, p. 208-212 How to Cite?
AbstractInternal friction (IF) measurement in the kilohertz frequency region has been performed for underdoped YBa 2 Cu 3 O 7-δ . A rapid decrease of IF with decreasing temperature is observed at a temperature T g ( > T c ), which is considered as the opening of pseudogap. Based on the feature of pseudogap described by V.J. Emery and the BCS theory, a power-law decrease of IF with temperature at T g is derived and the estimated index is found to be consistent with the experimental results. The decrease of the spin-lattice relaxation rate 1/T 1 for NMR near 150 K in the underdoped YBCO, similar to that of IF, can be explained in the same way. Furthermore, in view of the different phase coherence effects on IF and 1/T 1 , it can be predicted that another decrease in IF will occur near T c but not for 1/T 1 . This conclusion is confirmed by the experiments.
Persistent Identifierhttp://hdl.handle.net/10722/254418
ISSN
2023 Impact Factor: 1.3
2023 SCImago Journal Rankings: 0.339
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, Q. M.-
dc.contributor.authorWang, Y. N.-
dc.contributor.authorLi, A.-
dc.contributor.authorQiu, Q.-
dc.contributor.authorXu, X. S.-
dc.contributor.authorFeng, Y.-
dc.contributor.authorZhou, L.-
dc.date.accessioned2018-06-19T15:40:29Z-
dc.date.available2018-06-19T15:40:29Z-
dc.date.issued2000-
dc.identifier.citationPhysica C: Superconductivity and its Applications, 2000, v. 337, n. 1, p. 208-212-
dc.identifier.issn0921-4534-
dc.identifier.urihttp://hdl.handle.net/10722/254418-
dc.description.abstractInternal friction (IF) measurement in the kilohertz frequency region has been performed for underdoped YBa 2 Cu 3 O 7-δ . A rapid decrease of IF with decreasing temperature is observed at a temperature T g ( > T c ), which is considered as the opening of pseudogap. Based on the feature of pseudogap described by V.J. Emery and the BCS theory, a power-law decrease of IF with temperature at T g is derived and the estimated index is found to be consistent with the experimental results. The decrease of the spin-lattice relaxation rate 1/T 1 for NMR near 150 K in the underdoped YBCO, similar to that of IF, can be explained in the same way. Furthermore, in view of the different phase coherence effects on IF and 1/T 1 , it can be predicted that another decrease in IF will occur near T c but not for 1/T 1 . This conclusion is confirmed by the experiments.-
dc.languageeng-
dc.relation.ispartofPhysica C: Superconductivity and its Applications-
dc.titlePhase coherence effect on the normal state internal friction in underdoped YBa<inf>2</inf>Cu<inf>3</inf>O<inf>7-δ</inf>-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0921-4534(00)00102-7-
dc.identifier.scopuseid_2-s2.0-0034227201-
dc.identifier.volume337-
dc.identifier.issue1-
dc.identifier.spage208-
dc.identifier.epage212-
dc.identifier.isiWOS:000088686400041-
dc.identifier.issnl0921-4534-

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