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dc.contributor.authorLuo, C. W.en_US
dc.contributor.authorChen, J. -Y.en_US
dc.contributor.authorHuang, T. C.en_US
dc.contributor.authorWu, K. H.en_US
dc.contributor.authorLin, J. -Y.en_US
dc.contributor.authorJuang, J. Y.en_US
dc.contributor.authorUen, T. M.en_US
dc.date.accessioned2014-12-08T15:37:48Z-
dc.date.available2014-12-08T15:37:48Z-
dc.date.issued2011-01-01en_US
dc.identifier.issn1557-1939en_US
dc.identifier.urihttp://dx.doi.org/10.1007/s10948-010-0918-2en_US
dc.identifier.urihttp://hdl.handle.net/11536/25995-
dc.description.abstractThe ultrafast dynamics in an (001) oxygen-deficient Y(0.7)Ca(0.3)Ba(2)Cu(3)O(7-delta) thin film were measured by using the ultrafast spectroscopy. According to the model of time-dependent distributions of electrons in the case of electron-phonon relaxation, the electron-boson coupling constant lambda could be directly obtained from the relaxation time of the transient reflectivity change (Delta R/R). For the overdoped case with T (c)=61.3 K and the underdoped case with T (c)=65.5 K, the relaxation time of Delta R/R is around 4.32 ps and 3.66 ps, respectively, which correspond to lambda similar to 0.06. However, the lambda become larger (similar to 0.15) in the optimal doped region with T (c)=82.1 K while the relaxation time of Delta R/R shrinks to similar to 1.51 ps. These results indicate that the lambda is strongly hole-doping dependent, which may govern the T (c) of cuprate superconductors.en_US
dc.language.isoen_USen_US
dc.titleElectron-Boson Coupling Constant of Oxygen-Deficient Y(0.7)Ca(0.3)Ba(2)Cu(3)O(7-delta) Measured by Ultrafast Spectroscopyen_US
dc.typeArticleen_US
dc.identifier.doi10.1007/s10948-010-0918-2en_US
dc.identifier.journalJOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISMen_US
dc.citation.volume24en_US
dc.citation.issue1-2en_US
dc.citation.spage189en_US
dc.citation.epage191en_US
dc.contributor.department電子物理學系zh_TW
dc.contributor.department物理研究所zh_TW
dc.contributor.departmentDepartment of Electrophysicsen_US
dc.contributor.departmentInstitute of Physicsen_US
Appears in Collections:Articles