IRRADIATION-INDUCED CROSSOVER FROM POINT-DEFECTS TO CORRELATED DISORDER PINNING IN BI2SR2CACU2OX SINGLE-CRYSTALS

被引：27

作者：

MOSHCHALKOV, VV ^{[1
]}

METLUSHKO, VV ^{[1
]}

GUNTHERODT, G ^{[1
]}

GONCHAROV, IN ^{[1
]}

DIDYK, AY ^{[1
]}

BRUYNSERAEDE, Y ^{[1
]}

机构：

[1] RHEIN WESTFAL TH AACHEN,INST PHYS 2,W-5100 AACHEN,GERMANY

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.50.639

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The temperature dependence of the critical current j(cm)(T) in single-crystalline Bi2Sr2CaCu2Ox (BSCCO) changes dramatically with fast ion irradiation. In as-grown BSCCO crystals the j(cm)(T) curve follows the predictions of the Feigelman-Vinokur theory for collective pinning in the presence of point defects. In irradiated BSCCO we have obtained a good fit of j(cm)(T) over several decades and in a broad temperature range in the framework of the Nelson-Vinokur theory. The quality of the fit convincingly demonstrates the validity of this theory for the description of j(cm)(T) in BSCCO with columnar defects.

引用

页码：639 / 642

页数：4

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