Mixing of low-frequency Raman-active phonons studied by femtosecond pump-probe spectroscopy

被引：7
作者：
Misochko, OV
Kisoda, K
Harima, H
Mizoguchi, K
Sakai, K
Nakashima, S
机构：
[1] Kansai Adv Res Ctr, Commun Res Lab, Kobe, Hyogo 6512401, Japan
[2] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow, Russia
[3] Osaka Univ, Dept Appl Phys, Suita, Osaka 5650871, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1999年 / 320卷 / 3-4期
关键词：
femtosecond time-resolved spectroscopy; lattice dynamics; high-T(c) superconductors;
D O I：
10.1016/S0921-4534(99)00313-5
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report an optical study of the superconducting transition in the YBa(2)Cu(3)O(7-x) films on MgO substrate carried out by femtosecond pump-probe spectroscopy. In both the normal and the superconducting state, we have observed the transient time-resolved reflectivity caused by the oscillations associated with two A,, metal-ion modes. Temporal interference between the modes is modified below the phase transition, which also appeared in an altered relative intensity of the modes in the Fourier transformed spectra. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：213 / 217
页数：5
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