Fractional matching effect in single-crystal films of Bi2Sr2CaCu2O8+y with antidot lattice

被引：13

作者：

Ooi, S. ^{[1
]}

Mochiku, T. ^{[1
]}

Hirata, K. ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Superconducting Mat Ctr, Tsukuba, Ibaraki 3050047, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2009年 / 469卷 / 15-20期

关键词：

Fractional matching effect; Antidot lattice; Vortex; Bi2Sr2CaCu2O8+y; THIN-FILMS; VORTEX DYNAMICS; REGULAR ARRAYS; SUPERCONDUCTOR;

D O I：

10.1016/j.physc.2009.05.206

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To study the vortex behavior in 2D periodic pinning potentials, we measured field dependence of the vortex-flow resistance and the critical current in single-crystal Bi2Sr2CaCu2O8+y (Bi2212) films with an equilateral triangular array of antidots. Fractional matching effect was observed in 1/4, 1/3, 1/2, 2/3, 3/4, and 6/7 of the first matching field H-1, and even above H-1. While the most of fractional numbers except 1/2 can be explained from commensurability between triangular lattices of antidots and vortices, the matching effect in 1/2H(1) suggests the existence of the interstitial vortices in comparison with the results of a reported numerical simulation. The fractional matching effect above H, can be explained as a matching effect by multi-quanta vortices. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1113 / 1115

页数：3

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