Criticality of Tuning in Athermal Phase Transitions

被引：34

作者：

Chandni, U. ^{[1
]}

Ghosh, Arindam ^{[1
]}

Vijaya, H. S. ^{[2
]}

Mohan, S. ^{[2
]}

机构：

[1] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India

[2] Indian Inst Sci, Dept Instrumentat, Bangalore 560012, Karnataka, India

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 02期

关键词：

SELF-ORGANIZED CRITICALITY; GAUSSIAN 1/F NOISE; BARKHAUSEN NOISE; CRACKLING NOISE; TRANSFORMATIONS; DISTRIBUTIONS; AVALANCHES; FILMS;

D O I：

10.1103/PhysRevLett.102.025701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We experimentally address the importance of tuning in athermal phase transitions, which are triggered only by a slowly varying external field acting as tuning parameter. Using higher order statistics of fluctuations, evidence consistent with the existence a singular critical instability is detected, in spite of an apparent universal self-similar kinetics over a broad range of driving force. The results as well as the experimental technique are likely to be of significance to many slowly driven nonequilibrium systems from geophysics to material science which display avalanche dynamics.

引用

页数：4

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