Vortex Dynamics in a Superconducting Film with a Kagome and a Honeycomb Pinning Landscape

被引：17

作者：

Cuppens, J. ^{[1
]}

Ataklti, G. W. ^{[1
]}

Gillijns, W. ^{[1
]}

Van de Vondel, J. ^{[1
]}

Moshchalkov, V. V. ^{[1
]}

Silhanek, A. V. ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Lab Solid State Phys & Magnetism, Nanoscale Superconduct & Magnetism Grp, B-3001 Louvain, Belgium

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2011年 / 24卷 / 1-2期

关键词：

Periodic pinning; Electrical transport properties; VORTICES; ARRAY;

D O I：

10.1007/s10948-010-0893-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The vortex dynamics in a superconducting thin Al film with a periodic Honeycomb or Kagome array of antidots has been investigated by electrical transport measurements. The large values of the superconducting coherence length and penetration depth of the Al films guarantee a maximum of one flux quantum trapped per pinning site. This allows us to directly compare the experimental results with previous theoretical investigations based on molecular dynamics simulations. For the Kagome lattice, two submatching features not anticipated theoretically at H/H (1)=1/3 and 2/3, where H (1) is the field at which the number of vortices coincides with the number of pinning sites, are observed. Possible corresponding stable vortex patterns are suggested. For the Honeycomb pinning landscape, the commensurability effects are in agreement with the theoretical expectations. A preliminary analysis of the vortex mobility in this lattice shows the presence of a weak vortex guidance.

引用

页码：7 / 11

页数：5

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