Morphology of Flux Avalanches in Patterned Superconducting Films

被引：4

作者：

Zadorosny, R. ^{[1
]}

Colauto, F. ^{[2
]}

Motta, M. ^{[2
]}

Johansen, T. H. ^{[3
,4
]}

Dinner, R. ^{[5
]}

Blamire, M. ^{[5
]}

Ataklti, G. W. ^{[6
]}

Moshchalkov, V. V. ^{[6
]}

Silhanek, A. V. ^{[6
,7
]}

Ortiz, W. A. ^{[2
,3
]}

机构：

[1] Univ Estadual Paulista UNESP, Fac Engn Ilha Solteira, Dept Quim & Fis, Caixa Postal 31, BR-15385000 Ilha Solteira, SP, Brazil

[2] Univ Fed Sao Carlos, Dept Fis, Grp Supercondutividade & Magnetismo, BR-13565905 Sao Carlos, SP, Brazil

[3] Norwegian Acad Sci & Letters, Ctr Adv Study, N-0271 Oslo, Norway

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

[5] Univ Cambridge, Dept Mat Sci, Cambridge CB2 3QZ, England

[6] Katholieke Univ Leuven, INPAC Inst Nanoscale Phys & Chem, Nanoscale Superconduct & Magnetism Grp, B-3001 Heverlee, Belgium

[7] Univ Liege, Dept Phys, B-4000 Sart Tilman Par Liege, Belgium

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2013年 / 26卷 / 06期

基金：

巴西圣保罗研究基金会; 英国工程与自然科学研究理事会;

关键词：

Flux avalanches; Magnetooptical imaging; Antidots;

D O I：

10.1007/s10948-012-1429-0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

It is well known that under certain circumstances, magnetic fields applied perpendicularly to the plane of superconducting films can trigger flux avalanches. In such cases, the penetration has a tree-like profile. However, in samples where a regular array of antidots, ADs, is present, the avalanches follow the rows of ADs as if they were guiding lines for the abrupt penetration. In this work, we used the magnetooptical imaging technique to study the morphology of flux avalanches in two Nb films with a square lattice of square ADs, each one with a different lateral size, and a plain film for reference. We show that the morphology of the flux avalanches is greatly influenced by the size of the interstitial region.

引用

页码：2285 / 2288

页数：4

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