Vortex dynamics in ferromagnetic/superconducting bilayers

被引：1

作者：

Cieplak, M. Z. ^{[1
]}

Adamus, Z. ^{[1
]}

Konczykowski, M. ^{[2
,3
]}

Zhu, L. Y. ^{[4
]}

Chien, C. L. ^{[4
]}

机构：

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

[2] Ecole Polytech, Solides Irradies Lab, CEA DSM DRECAM, F-91128 Palaiseau, France

[3] Ecole Polytech, CNRS, UMR 7642, F-91128 Palaiseau, France

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

来源：

ACTA PHYSICA POLONICA A | 2008年 / 114卷 / 01期

关键词：

D O I：

10.12693/APhysPolA.114.23

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dependence of vortex dynamics on the geometry of magnetic domain pattern is studied in the superconducting/ferromagnetic bilayers, in which niobium is a superconductor, and Co/Pt multilayer with perpendicular magnetic anisotropy serves as a ferrromagnetic layer. Magnetic domain patterns with different density of domains per surface area and different domain size, w, are obtained for Co/Pt with different thickness of Pt. The dense patterns of domains with the size comparable to the magnetic penetration depth (w >= lambda) produce large vortex pinning and smooth vortex penetration, while less dense patterns with larger domains (w >> lambda) enhance pinning less effectively and result in flux jumps during flux motion.

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页码：23 / 28

页数：6

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