LOW-TEMPERATURE ACTION IN YBA2CU3O7-DELTA

被引：21

作者：

SEIDLER, GT

ROSENBAUM, TF

BEAUCHAMP, KM

JAEGER, HM

CRABTREE, GW

WELP, U

VINOKUR, VM

机构：

[1] UNIV CHICAGO,JAMES FRANCK INST,CHICAGO,IL 60637

[2] UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

[3] ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.74.1442

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have performed a high-resolution study of the temperature dependence of vortex dynamics for 5×10-4<T/Tc<10-2 in untwinned single crystals of the high- Tc superconductor, YBa2Cu3O7-. Through the introduction of a bithermal magnetization relaxation technique, we have uncovered a previously unresolved, linear temperature contribution to the semiclassical action for vortex tunneling. Finally, we have compared the weak and strong pinning regimes through heavy ion irradiation of a series of crystals. © 1995 The American Physical Society.

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页码：1442 / 1445

页数：4

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