標題: Ultrafast dynamics in Pr-doped and oxygen-deficient YBCO films by femtosecond spectroscopy
作者: Wu, KH
Luo, CW
Juang, JY
Uen, TM
Gou, YS
電子物理學系
Department of Electrophysics
關鍵字: femtosecond laser;oxygen deficiency;YBaCuO substituted;ultrafast dynamics
公開日期: 1-七月-2000
摘要: We have systematically measured the transient reflectivity (Delta R/R) in Pr-doped YBCO (PrxY1-xBa2Cu3O7) and partially oxygen deficient YBCO (YBa2Cu3O7-delta) thin films at temperatures ranging from 300 to 12 K by using the femtosecond pump-probe technique. Measurements performed at low temperatures indicate that the magnitude, polarity, and relaxation time of the transient reflectivity is strongly dependent on the photon energy and pumping intensity of the optical excitation, the ambient temperature, and the doping level of the superconducting thin films. Moreover, the temperature dependence of the Fermi-level position was also observed. (C) 2000 Elsevier Science B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/S0921-4526(99)02258-9
http://hdl.handle.net/11536/30418
ISSN: 0921-4526
DOI: 10.1016/S0921-4526(99)02258-9
期刊: PHYSICA B
Volume: 284
Issue: 
起始頁: 939
結束頁: 940
顯示於類別:會議論文


文件中的檔案:

  1. 000087311700468.pdf