Elongation of skyrmions by Dzyaloshinskii-Moriya interaction in helimagnetic films

被引：5

作者：

Dai, Ying-Ying ^{[1
]}

Wang, Han ^{[1
]}

Yang, Teng ^{[1
]}

Adeyeye, Adekunle O. ^{[2
,3
]}

Zhang, Zhi-Dong ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

[2] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117583, Singapore

[3] Univ Durham, Dept Phys, Durham DH1 3LE, England

来源：

RARE METALS | 2022年 / 41卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Elongated skyrmions; Dzyaloshinskii-Moriya interaction; Skyrmion Hall effect; Zero-field skyrmions; TEMPERATURE; LATTICE; DEFORMATION; DYNAMICS;

D O I：

10.1007/s12598-022-02023-z

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Distortion of skyrmions arouses much attention recently due to the exotic topological and dynamic properties. Investigating the formation mechanism and dynamical behavior of the deformed skyrmions promotes practical spintronic applications. Elongation, as a typical form of deformation, has been discovered both in experiments and in theories. However, the intrinsic mechanism is absent. Here, the coexistence of zero-field circular and elongated skyrmions in helimagnetic films is observed. The elongated skyrmions, which are determined by the intrinsic Dzyaloshinskii-Moriya interaction (DMI), carry the same topological charge as the circular ones and show the skyrmion Hall effect. Currentdriven dynamics reveal again the significant role of the intrinsic DMI playing in the skyrmion elongation.

引用

页码：3150 / 3159

页数：10

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