QUANTUM CREEP IN A BI2SR2CACU2OX SINGLE-CRYSTAL

被引：29
|
作者：
AUPKE, K [1 ]
TERUZZI, T [1 ]
VISANI, P [1 ]
AMANN, A [1 ]
MOTA, AC [1 ]
ZAVARITSKY, VN [1 ]
机构：
[1] PL KAPITZA PHYS PROBLEMS INST,MOSCOW 117334,RUSSIA
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1993年 / 209卷 / 1-3期
关键词：
D O I：
10.1016/0921-4534(93)90918-G
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
According to the theory of quantum collective creep (QCC) of Blatter, Geshkenbein and Vinokur, the quantum creep rate is enhanced in superconductors with short coherence length xi, high normal state resistivity rho(n), weak collective pinning and strong anisotropy. We have investigated quantum tunneling in a single crystal of the highly anisotropic Bi2Sr2CaCu2Ox. In the configuration with the external field parallel to the c-axis we measure tunneling rates at T = 7 mK which are a factor of 4 to 5 higher than our previous measurements in Y1Ba2Cu4Oy.
引用
收藏
页码：255 / 258
页数：4
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