Coupling of skyrmions mediated by the RKKY interaction

被引：19

作者：

Cacilhas, R. ^{[1
]}

Carvalho-Santos, V. L. ^{[1
]}

Vojkovic, S. ^{[2
]}

Carvalho, E. B. ^{[3
]}

Pereira, A. R. ^{[1
]}

Altbir, D. ^{[4
]}

Nunez, A. S. ^{[5
]}

机构：

[1] Univ Fed Vicosa, Dept Fis, Av Peter Henry Rolfs S-N, BR-36570000 Vicosa, MG, Brazil

[2] Univ Catholica Chile, Inst Fis, Santiago, Chile

[3] Univ Fed Vale Sao Franciso, Campus Juazeiro,Av Antonio C Magalhaes 510, BR-48902300 Juazeiro, BA, Brazil

[4] Univ Santiago Chile, Dept Fis, CEDENNA, Avda Ecuador 3493, Santiago, Chile

[5] Univ Chile, Fac Ciencias Fis & Matemat, Dept Fis, Casila 487-3, Santiago, Chile

来源：

APPLIED PHYSICS LETTERS | 2018年 / 113卷 / 21期

关键词：

STABILITY; MOTION;

D O I：

10.1063/1.5062168

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A discussion on the interaction between skyrmions in a bi-layer system connected by a non-magnetic metal is presented. Using a free charge carrier model, we have shown that, depending on the spacer thickness, the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction can induce attractive or repulsive interactions. We have also shown that due to an increase in the RKKY energy when the skyrmions are far from each other, their widths are diminished. Finally, we have obtained analytical solutions to the skyrmion position when the in-plane distance between the skyrmions is small. In this case, an attractive RKKY interaction yields a skyrmion precessional motion. This RKKY-induced coupling could be used as a skyrmion drag mechanism to displace skyrmions in multilayers. Published by AIP Publishing.

引用

页数：5

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