Scaling behavior of the critical current in clean epitaxial Ba(Fe1-xCox)2As2 thin films

被引：71

作者：

Iida, K. ^{[1
]}

Haenisch, J. ^{[1
]}

Thersleff, T. ^{[1
]}

Kurth, F. ^{[1
]}

Kidszun, M. ^{[1
]}

Haindl, S. ^{[1
]}

Huehne, R. ^{[1
]}

Schultz, L. ^{[1
]}

Holzapfel, B. ^{[1
]}

机构：

[1] IFW Dresden, D-01171 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 10期

关键词：

SUPERCONDUCTORS; ANISOTROPY;

D O I：

10.1103/PhysRevB.81.100507

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The angular-dependent critical current density, J(c)(Theta), and the upper critical field, H-c2(Theta), of epitaxial Ba(Fe1-xCox)(2)As-2 thin films have been investigated. No J(c)(Theta) peaks for H parallel to c were observed regardless of temperatures and magnetic fields. In contrast, J(c)(Theta) showed a broad maximum at Theta=90 degrees, which arises from intrinsic pinning. All data except at Theta=90 degrees can be scaled by the Blatter plot. H-c2(Theta) near T-c follows the anisotropic Ginzburg-Landau expression. The mass anisotropy increased from 1.5 to 2 with increasing temperature, which is an evidence for multiband superconductivity.

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页数：4

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