Bi-Stability of Magnetic Skyrmions in Ultrathin Multilayer Nanodots Induced by Magnetostatic Interaction

被引：19

作者：

Zelent, M. ^{[1
]}

Tobik, J. ^{[2
]}

Krawczyk, M. ^{[1
]}

Guslienko, K. Y. ^{[3
,4
]}

Mruczkiewicz, M. ^{[2
]}

机构：

[1] Adam Mickiewicz Univ, Fac Phys, PL-61614 Poznan, Poland

[2] Slovak Acad Sci, Inst Elect Engn, Bratislava 84104, Slovakia

[3] Univ Basque Country, Dept Fis Mat, UPV EHU, San Sebastian 20018, Spain

[4] Basque Fdn Sci, Ikerbasque, Bilbao 48013, Spain

来源：

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2017年 / 11卷 / 10期

基金：

欧盟地平线“2020”;

关键词：

bi-stability; magnetostatic interactions; nanodots; Neel skyrmion; skyrmions; NEEL SKYRMIONS; MORIYA;

D O I：

10.1002/pssr.201700259

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the results of simulations of magnetic skyrmion stability in ultrathin magnetic multilayer nanodots with interfacial Dzyaloshinskii-Moriya exchange interaction (DMI). We found that in presence of the lateral confinement the magnetostatic energy significantly influences the skyrmion stability and leads to stabilization of large-radius skyrmion even at low values of the DMI strength, in addition to small-radius skyrmion stabilized by DMI. In particular, stabilization of the skyrmion state with two different radii (bi-stability) is found in dipolarly-coupled (Pt/Co/Ir)(n) circular nanodots with the number of repeats of the unit cell n=3 and 5. The bi-stability range is located at the DMI strength of 0.9-1.1mJm(-2) or at the total Co-layer thickness of 2.2-2.6nm.

引用

页数：5

共 32 条

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