TRANSITION FROM ACTIVATED TO DIFFUSIVE BEHAVIOR IN THE VORTEX-LIQUID STATE IN YBA2CU3O7

被引：134

作者：

CHIEN, TR

JING, TW

ONG, NP

WANG, ZZ

机构：

[1] Joseph Henry Laboratories of Physics, Princeton University, Princeton

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.66.3075

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In the vortex-liquid state in YBa2CU3O7, there exist two distinct dissipative states separated by a field H(k). Below H(k), the resistivity is strongly field activated, with a prefactor that is anomalously enhanced over the normal-state resistivity rho-N by approximately 12 orders of magnitude. At H(k), the prefactor collapses to a temperature-independent value equal to PN, and the vortex motion becomes diffusive. The existence of the H(k) boundary is also reflected in the anomalous behavior of the Hall resistivity.

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页码：3075 / 3078

页数：4

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