Skyrmionic magnetization configurations at chiral magnet/ferromagnet heterostructures

被引：11

作者：

Kawaguchi, Yuki ^{[1
,2
]}

Tanaka, Yukio ^{[2
]}

Nagaosa, Naoto ^{[1
,3
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Tokyo 1130033, Japan

[2] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan

[3] RIKEN, CEMS, 2-1 Hirosawa, Wako, Saitama 3510198, Japan

来源：

PHYSICAL REVIEW B | 2016年 / 93卷 / 06期

基金：

日本学术振兴会;

关键词：

WEAK FERROMAGNETISM; LATTICE; CRYSTALS; DYNAMICS; MAGNET; MNSI;

D O I：

10.1103/PhysRevB.93.064416

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We consider magnetization configurations at chiral magnet (CM)/ferromagnet (FM) heterostructures. In the CM, magnetic skyrmions and spin helices emerge due to the Dzyaloshinskii-Moriya interaction, which then penetrate into the adjacent FM. However, because the nonuniform magnetization structures are energetically unfavorable in the FM, the penetrated magnetization structures are deformed, resulting in exotic three-dimensional configurations, such as skyrmion cones, sideways skyrmions, and twisted helices and skyrmions. We discuss the stability of possible magnetization configurations at the CM/FM and CM/FM/CM hybrid structures within the framework of the variational method, and find that various magnetization configurations appear in the ground state, some of which cause nontrivial emergent magnetic field.

引用

页数：15

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