Novel Chiral Magnetic Domain Wall Structure in Fe/Ni/Cu(001) Films

被引：233

作者：

Chen, G. ^{[1
,2
,3
]}

Zhu, J. ^{[1
,2
]}

Quesada, A. ^{[3
]}

Li, J. ^{[1
,2
]}

N'Diaye, A. T. ^{[3
]}

Huo, Y. ^{[1
,2
]}

Ma, T. P. ^{[1
,2
]}

Chen, Y. ^{[1
,2
]}

Kwon, H. Y. ^{[4
]}

Won, C. ^{[4
]}

Qiu, Z. Q. ^{[5
]}

Schmid, A. K. ^{[3
]}

Wu, Y. Z. ^{[1
,2
]}

机构：

[1] Fudan Univ, Ctr Spintron Devices & Applicat, State Key Lab Surface Phys, Dept Phys, Shanghai 200433, Peoples R China

[2] Fudan Univ, Ctr Spintron Devices & Applicat, Adv Mat Lab, Shanghai 200433, Peoples R China

[3] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, NCEM, Berkeley, CA 94720 USA

[4] Kyung Hee Univ, Dept Phys, Seoul 130701, South Korea

[5] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 17期

基金：

新加坡国家研究基金会; 美国国家科学基金会;

关键词：

SKYRMION LATTICE;

D O I：

10.1103/PhysRevLett.110.177204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using spin-polarized low energy electron microscopy, we discovered a new type of domain wall structure in perpendicularly magnetized Fe/Ni bilayers grown epitaxially on Cu(100). Specifically, we observed unexpected Neel-type walls with fixed chirality in the magnetic stripe phase. Furthermore, we find that the chirality of the domain walls is determined by the film growth order with the chirality being right handed in Fe/Ni bilayers and left handed in Ni/Fe bilayers, suggesting that the underlying mechanism is the Dzyaloshinskii-Moriya interaction at the film interfaces. Our observations may open a new route to control chiral spin structures using interfacial engineering in transition metal heterostructures. DOI:10.1103/PhysRevLett.110.177204

引用

页数：5

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