Observation of vortex-like excitations in Pr-doped YBCO thin films from femtosecond spectroscopy

被引：2

作者：

Luo, C. W. ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 30050, Taiwan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2010年 / 470卷

关键词：

Ultrafast dynamics; Pr-doped YBCO; Nernst signal; DYNAMICS; SUPERCONDUCTORS; YBA2CU3O7-DELTA;

D O I：

10.1016/j.physc.2009.11.026

中图分类号：

O59 [应用物理学];

学科分类号：

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.

引用

页码：S176 / S177

页数：2

共 32 条

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