Vortex avalanches with robust statistics observed in superconducting niobium

被引：45

作者：

Altshuler, E ^{[1
]}

Johansen, TH

Paltiel, Y

Jin, P

Bassler, KE

Ramos, O

Chen, QY

Reiter, GF

Zeldov, E

Chu, CW

机构：

[1] Univ Havana, Superconduct Lab, IMRE Phys Fac, Havana 10400, Cuba

[2] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA

[3] Univ Oslo, Dept Phys, N-0316 Oslo, Norway

[4] Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel

[5] Univ Houston, Dept Phys, Houston, TX 77204 USA

[6] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[7] Hong Kong Univ Sci & Technol, Kowloon, Hong Kong, Peoples R China

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 14期

基金：

美国国家科学基金会; 以色列科学基金会;

关键词：

D O I：

10.1103/PhysRevB.70.140505

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By combining micro-Hall probe and magneto-optical imaging techniques we have been able to examine vortex avalanches at different locations of the ridgelike magnetic topography of superconducting niobium samples as the external field is slowly increased. The avalanche size distributions are shown to be power laws for two decades with very similar critical exponents at all locations, thus demonstrating a remarkable robustness in the details of the flux penetration dynamics.

引用

页码：140505 / 1

页数：4

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