IDENTIFICATION OF DIFFERENT PINNING REGIMES IN BI2SR2CACU2OX SINGLE-CRYSTALS

被引：14

作者：

METLUSHKO, VV ^{[1
]}

GUNTHERODT, G ^{[1
]}

MOSHCHALKOV, VV ^{[1
]}

BRUYNSERAEDE, Y ^{[1
]}

机构：

[1] RHEIN WESTFAL TH AACHEN,INST PHYS 2,D-52056 AACHEN,GERMANY

来源：

EUROPHYSICS LETTERS | 1994年 / 26卷 / 05期

关键词：

D O I：

10.1209/0295-5075/26/5/009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By analysing the flux line dynamics and the critical current density j(c) as a function of temperature T and magnetic field H in as-grown Bi2Sr2CaCu2Ox single crystals, we have proposed the identification of different pinning regimes predicted by the collective-pinning theory. The crossover critical current corresponding to the onset of the large-flux-bundle regime corresponds to a sharp kink on the j(c) (T) curve. A quantitative fit of the j(c), (T, H) dependences has been achieved for a broad range of temperatures and magnetic fields.

引用

页码：371 / 376

页数：6

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