SCALING OF VORTEX TRANSPORT-PROPERTIES IN HIGH-TEMPERATURE SUPERCONDUCTORS

被引：42

作者：

YEH, NC

REED, DS

JIANG, W

KRIPLANI, U

HOLTZBERG, F

GUPTA, A

HUNT, BD

VASQUEZ, RP

FOOTE, MC

BAJUK, L

机构：

[1] IBM CORP,THOMAS J WATSON RES CTR,DIV RES,YORKTOWN HTS,NY 10598

[2] CALTECH,JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91109

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.45.5654

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using both dc and low-frequency-ac (10-10(5) Hz) transport measurements in low magnetic fields (0-6.3 kOe), we find that the vortex transport properties of YBa2Cu2.98Au0.02Ox (x = 6.97 +/- 0.02) single crystals are consistent with a three-dimensional second-order vortex-solid melting transition, with a static exponent v = 0.9 +/- 0.2, a dynamic exponent z = 2.0 +/- 0.2, and a characteristic current-density exponent mu = 0.5 +/- 0.1. In contrast, transport properties of epitaxial films generally agree with the Ambegaokar-Halperin model.

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收藏

页码：5654 / 5658

页数：5

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