SUPPRESSION OF THE FIRST-ORDER VORTEX MELTING TRANSITION BY INTRINSIC PINNING IN YBA2CU3O7-DELTA

被引：153

作者：

KWOK, WK ^{[1
]}

FENDRICH, J ^{[1
]}

WELP, U ^{[1
]}

FLESHLER, S ^{[1
]}

DOWNEY, J ^{[1
]}

CRABTREE, GW ^{[1
]}

机构：

[1] ARGONNE NATL LAB,SCI & TECHNOL CTR SUPERCONDUCT,ARGONNE,IL 60439

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.72.1088

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The first order vortex melting transition in single crystal YBa2Cu3O7-delta is investigated for magnetic field direction close to H parallel to ab. For exact field alignment H parallel to ab, the ''kink'' in p(T) associated with the first order melting transition is replaced with a continuous resistive transition in the presence of intrinsic pinning, indicative of a second order transition with dynamic scaling exponent s=1.4. In addition, we demonstrate the abatement of the ''kink'' in the temperature dependence of the magnetoresistivity, associated with the first order melting transition for H parallel to c in the presence of only six twin boundaries.

引用

页码：1088 / 1091

页数：4

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