Kinetic roughening of penetrating flux fronts in high-Tc thin film superconductors

被引：59

作者：

Surdeanu, R ^{[1
]}

Wijngaarden, RJ ^{[1
]}

Visser, E ^{[1
]}

Huijbregtse, JM ^{[1
]}

Rector, JH ^{[1
]}

Dam, B ^{[1
]}

Griessen, R ^{[1
]}

机构：

[1] Vrije Univ Amsterdam, Fac Sci, Div Phys & Astron, NL-1081 HV Amsterdam, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.83.2054

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Kinetic roughening of flux fronts penetrating in superconducting thin films are studied by means of a high resolution magneto-optic technique. The roughening exponent (alpha = 0.64) and growth exponent (beta = 0.65) obtained from a dynamic scaling analysis of the initial stage of flux penetration and, at small length scales, are characteristic for a static disorder dominated nonlinear diffusion such as also observed in the directed percolated depinning model. At large length scale, alpha = 0.46 indicates a transition towards dynamic stochastic disorder, similar to the behavior of Kardar-Parisi-Zhang systems. There is a striking similarity with the behavior of combustion fronts in burning paper.

引用

页码：2054 / 2057

页数：4

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