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Microwave spectroscopy of thermally excited quasiparticles in YBa2Cu3O6.99

被引：197
作者：
Hosseini, A
Harris, R
Kamal, S
Dosanjh, P
Preston, J
Liang, RX
Hardy, WN
Bonn, DA
机构：
[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada
[2] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada
来源：
PHYSICAL REVIEW B | 1999年 / 60卷 / 02期
关键词：
D O I：
10.1103/PhysRevB.60.1349
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present here the microwave surface impedance of a high-purity crystal of YBa2Cu3O6.99 measured at five frequencies between 1 and 75 GHz. This data set reveals the main features of the conductivity spectrum of the thermally excited quasiparticles in the superconducting state. Below 20 K there is a regime of extremely long quasiparticle scattering times, due to both the collapse of inelastic scattering below T-c and the very weak impurity scattering in the high-purity BaZrO3-grown crystal used in this study. Above 20 K, the scattering increases dramatically, initially at least as fast as T-4. [S0163-1829(99)04425-2].
引用
收藏
页码：1349 / 1359
页数：11
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