FIRST-ORDER DECOUPLING TRANSITION IN THE VORTEX LATTICE OF BI2SR2CACU2O8 FROM LOCAL MUTUAL INDUCTANCE MEASUREMENTS

被引：57

作者：

DOYLE, RA ^{[1
]}

LINEY, D ^{[1
]}

SEOW, WS ^{[1
]}

CAMPBELL, AM ^{[1
]}

KADOWAKI, K ^{[1
]}

机构：

[1] NATL RES INST MET,TSUKUBA,IBARAKI 305,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.75.4520

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have used a miniature mutual inductance technique to measure the ac transmittivity Bi2Sr2CaCu2O8 crystals in small applied dc fields. A sharp change in the inductive voltage in the vicinity of the irreversibility line at fields below 60 mT and temperatures above about 40 K is observed. The effects of ac frequency, dc field, and the orientation of the applied dc field with respect to the c axis are investigated. This sharp feature appears to be similar to the melting transition recently observed in local magnetic measurements. We find it is associated with changes in the c-axis resistivity and is consistent with a first-order decoupling transition.

引用

页码：4520 / 4523

页数：4

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