標題: Observation of vortex-like excitations in Pr-doped YBCO thin films from femtosecond spectroscopy
作者: Luo, C. W.
電子物理學系
Department of Electrophysics
關鍵字: Ultrafast dynamics;Pr-doped YBCO;Nernst signal
公開日期: 1-十二月-2010
摘要: The ultrafast dynamics of photoinduced quasiparticles in the (001) Pr-doped YBCO (Y(1-x)Pr(x)Ba(2) Cu(3)O(7-delta), x = 0.1 and 0.2) thin films is revealed by using the femtosecond spectroscopy. Above the zero resistance transition temperature (T(c)), the anomalous rise in the amplitude of the transient reflectivity curves (Delta R/R) were clearly observed. The temperature (T(N)) corresponded to the negative peak in temperature-dependent Delta R/R is well associated with the onset temperature of the anomalous Nernst signal. These ultrafast responses are attributed to vortex-like excitations in the phase incoherent condensate existing above T(c). (C) 2009 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.physc.2009.11.026
http://hdl.handle.net/11536/4685
ISSN: 0921-4534
DOI: 10.1016/j.physc.2009.11.026
期刊: PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
Volume: 470
Issue: 
起始頁: S176
結束頁: S177
顯示於類別:會議論文


文件中的檔案:

  1. 000286075700075.pdf