Magnetic tunable confinement of the superconducting condensate in superconductor/ferromagnet hybrids

被引：3

作者：

Aladyshkin, A. Yu. ^{[1
,2
]}

Gillijns, W. ^{[1
]}

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

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

机构：

[1] Katholieke Univ Leuven, INPAC, Nanoscale Superconduct & Magnetism & Pulsed Field, B-3001 Louvain, Belgium

[2] Russian Acad Sci, Inst Phys Microstruct, Nizhnii Novgorod 603950, Russia

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2008年 / 468卷 / 7-10期

基金：

俄罗斯基础研究基金会;

关键词：

nucleation of superconductivity; superconductor/ferromagnet hybrid; domain-wall superconductivity; field-induced superconductivity;

D O I：

10.1016/j.physc.2007.11.039

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of a nonuniform magnetic field induced by a ferromagnet on the magnetoresistance of thin-film superconductor/ferromagnet hybrid structures was investigated experimentally. Two different magnetic textures with out-of-plane magnetization were considered: a plain ferromagnetic film with bubble domains and a regular array of ferromagnetic dots. The stray fields of the structures are able to affect the spatial profile of the superconducting condensate, leading to a modification of the dependence of the critical temperature T-c on an external magnetic field H. We showed how the standard linear T-c(H) dependence with a single maximum at H = 0 can be continuously transformed into so-called reentrant phase boundary with two T-c peaks. We demonstrated that both domain-wall superconductivity and field-induced superconductivity are different manifestations of the magnetic confinement effect in various magnetic patterns. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：737 / 740

页数：4

共 15 条

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