Universal phenomenon of self-organized criticality in magnetic flux dynamics

被引：0

作者：

Matizen, EV ^{[1
]}

Ishikaev, SM ^{[1
]}

机构：

[1] RAS, SB, AV Nikolaev Inst Inorgan Chem, Novosibirsk, Russia

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2005年 / 120卷 / 1-3期

关键词：

D O I：

10.1016/j.molliq.2004.07.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Magnetization curves of square arrays of Josephson junctions of two basic types were investigated: superconductor-insulator-superconductor (SIS) and superconductor-normal metal-superconductor (SNS). Magnetic flux avalanches were observed in SIS arrays. A statistical analysis of flux avalanches showed that their size distribution can be described by a power law with a crossover where the exponent n varies from -1.2 for small avalanches to -3.5 for the large ones. Such a behavior of avalanches is interpreted as the self-organized criticality (SOC) manifestation. In SNS arrays, the flux avalanches were not observed, but a considerable asymmetry of a hysteresis curve was revealed. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：39 / 42

页数：4

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