Ultrafast dynamics in oxygen-deficient Y0.7Ca 0.3Ba2Cu3O7-δ superconductors

Chih-Wei Luo; T. C. Huang; Kaung-Hsiung Wu; Jenh-Yih Juang; Jiunn-Yuan Lin; T. M. Uen; T. Kobayashi

doi:10.1088/1742-6596/150/5/052144

Ultrafast dynamics in oxygen-deficient Y_0.7Ca _0.3Ba₂Cu₃O_7-δ superconductors

Chih-Wei Luo, T. C. Huang, Kaung-Hsiung Wu, Jenh-Yih Juang, Jiunn-Yuan Lin, T. M. Uen, T. Kobayashi

Research output: Contribution to journal › Article › peer-review

Abstract

The transient reflectivity change (ΔR/R) in oxygen-deficient Y _0.7Ca_0.3Ba₂Cu₃O_7-δ (YCaBCO) thin films have been systematically measured at various temperatures by femtosecond spectroscopy. The magnitude change of ΔR/R from normal state to superconducting state were clearly observed in YCaBCO with various oxygen deficient, e.g. from overdoped region over optimaldoped region to underdoped region. Additionally, the carrier-phonon coupling strength was also characterized by the relaxation time of ΔR/R at various temperatures and hole concentration.

Original language	English
Article number	052144
Pages (from-to)	1-4
Number of pages	4
Journal	Journal of Physics: Conference Series
Volume	150
Issue number	5
DOIs	https://doi.org/10.1088/1742-6596/150/5/052144
State	Published - 6 Aug 2009

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abstract = "The transient reflectivity change (ΔR/R) in oxygen-deficient Y 0.7Ca0.3Ba2Cu3O7-δ (YCaBCO) thin films have been systematically measured at various temperatures by femtosecond spectroscopy. The magnitude change of ΔR/R from normal state to superconducting state were clearly observed in YCaBCO with various oxygen deficient, e.g. from overdoped region over optimaldoped region to underdoped region. Additionally, the carrier-phonon coupling strength was also characterized by the relaxation time of ΔR/R at various temperatures and hole concentration.",

author = "Chih-Wei Luo and Huang, {T. C.} and Kaung-Hsiung Wu and Jenh-Yih Juang and Jiunn-Yuan Lin and Uen, {T. M.} and T. Kobayashi",

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AU - Juang, Jenh-Yih

AU - Lin, Jiunn-Yuan

AU - Uen, T. M.

AU - Kobayashi, T.

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AB - The transient reflectivity change (ΔR/R) in oxygen-deficient Y 0.7Ca0.3Ba2Cu3O7-δ (YCaBCO) thin films have been systematically measured at various temperatures by femtosecond spectroscopy. The magnitude change of ΔR/R from normal state to superconducting state were clearly observed in YCaBCO with various oxygen deficient, e.g. from overdoped region over optimaldoped region to underdoped region. Additionally, the carrier-phonon coupling strength was also characterized by the relaxation time of ΔR/R at various temperatures and hole concentration.

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Ultrafast dynamics in oxygen-deficient Y_0.7Ca _0.3Ba₂Cu₃O_7-δ superconductors

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