LOW-TEMPERATURE VORTEX STATE OF THE HIGH-T-C SUPERCONDUCTOR BI2SR2CA2CU3O10 IN HIGH MAGNETIC-FIELDS

被引：19

作者：

LI, Q

WIESMANN, HJ

SUENAGA, M

MOTOWIDLO, L

HALDAR, P

机构：

[1] IGC ADV SUPERCONDUCTORS INC, WATERBURY, CT 06704 USA

[2] INTERMAGNET GEN CORP, GUILDERLAND, NY 12084 USA

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.51.701

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report detailed measurements of current-voltage characteristics for a Bi2Sr2Ca2Cu3O10/Ag tape immersed in liquid neon (27 K) and in liquid oxygen (5490 K) as a function of applied magnetic field up to 17 T. It is found that the electric-field-versus-current-density (E-J) curves can be well described by the relation E/Jexp[-(J0/J)], where J0 is a constant. The exponent at elevated temperature (T54 K) is less than 0.9, and is inconsistent with the vortex-glass description, which predicts <1. At low-temperature (T=27 K), a plateau in the value of (1.45) is found for 2H8 T, which may be described by the collective creep theory at this temperature and field range. © 1995 The American Physical Society.

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页码：701 / 704

页数：4

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