Phase Diagram and Activation Energy for Vortex Pinning in Nb/(Co,Pd) Superconductor-Ferromagnet Bilayer

被引：0

作者：

Syryanyy, Y. ^{[1
]}

Aleszkiewicz, M. ^{[1
]}

Cieplak, Marta Z. ^{[1
]}

Zhu, L. Y. ^{[2
]}

Chien, C. L. ^{[2
]}

机构：

[1] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

[2] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

来源：

ACTA PHYSICA POLONICA A | 2014年 / 126卷 / 4A期

关键词：

ENHANCEMENT; FILM;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using the magnetoresistance measurements we study the phase transition line and the activation energy for vortex pinning in superconductor/ferromagnet bilayer, built of a ferromagnetic Co/Pd multilayer with perpendicular magnetic anisotropy, and a niobium film, with insulating layer in-between to eliminate proximity effect. The domain width is reversibly pre-defined using the angle-dependent demagnetization. We find that the enhancement of the activation energy for vortex pinning by magnetic domains is rather modest, by a factor of about 2.1. We attribute this to large domain width, and large dispersion of the domain width in this bilayer.

引用

页码：A123 / A126

页数：4

共 20 条

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