Angular dependence of vortex glass transition in YBa2Cu3Ox thin films

被引：7

作者：

Gupta, SK ^{[1
]}

Sen, S

Vyas, JC

Pai, SP

Pinto, R

Sahni, VC

机构：

[1] Bhabha Atom Res Ctr, Tech Phys & Prototype Engn Div, Bombay 400085, Maharashtra, India

[2] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1999年 / 324卷 / 3-4期

关键词：

critical phenomena; electrical resistivity; glassy state; thin films;

D O I：

10.1016/S0921-4534(99)00512-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the current-voltage (I-V) characteristics in epitaxial YBa2Cu3Ox thin films as a function of applied magnetic field (H) and angle a between field and ab-plane. The data shows signatures of Vortex Glass (VG) transition in the flux line lattice (FLL) at all angles. Critical exponents and functional form of scaling functions are seen to be independent of field and angle indicating universality of VG transition. Field and angle dependence of VG scaling functions is seen to be in agreement with anisotropic Ginzburg-Landau model for angles theta>10 degrees. Sharp changes in the scaling functions have been observed when the field is applied parallel to the ab-plane which indicates the effect of intrinsic pinning. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：137 / 142

页数：6