標題: Doping dependence of the ultrafast electronic dynamics of Y(1-x)Pr(x)Ba(2)Cu(3)O(7-delta) thin-film superconductors from femtosecond optical spectroscopy
作者: Luo, C. W.
Lo, H. P.
Su, C. H.
Wu, I. H.
Chen, Y. -J.
Wu, K. H.
Lin, J. -Y.
Uen, T. M.
Juang, J. Y.
Kobayashi, T.
電子物理學系
物理研究所
Department of Electrophysics
Institute of Physics
公開日期: 17-九月-2010
摘要: Time-domain spectroscopy, which probes the dynamics of the electronic states near Fermi surface that are associated with superconductivity, has proven to be a powerful method for providing insights into the fundamental nature of both pseudogap and superconducting gap. This study shows that the unique T-x phase diagram with the time-evolving ultrafast dynamics of Y(1-x)Pr(x)Ba(2)Cu(3)O(7-delta) can be used to identify clearly the Nernst, pseudogap, and superconducting regions. All of the orders appear together at a specific delay time, such as 1.2-3 ps, after pumping by an ultrashort pulse. These discoveries suggest that the Nernst effect, the pseudogap and even superconductivity may have the same physical origin.
URI: http://dx.doi.org/10.1103/PhysRevB.82.104512
http://hdl.handle.net/11536/32182
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.82.104512
期刊: PHYSICAL REVIEW B
Volume: 82
Issue: 10
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