Structure and strain tunings of topological anomalous Hall effect in cubic noncollinear antiferromagnet Mn3Pt epitaxial films

被引：18

作者：

An, Ning ^{[1
]}

Tang, Meng ^{[1
]}

Hu, Shuai ^{[1
]}

Yang, HuangLin ^{[1
]}

Fan, WeiJia ^{[1
]}

Zhou, ShiMing ^{[1
]}

Qiu, XuePeng ^{[1
]}

机构：

[1] Tongji Univ, Sch Phys Sci & Engn, Shanghai Key Lab Special Artificial Microstruct, Shanghai 200092, Peoples R China

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2020年 / 63卷 / 09期

基金：

上海市自然科学基金; 中国国家自然科学基金;

关键词：

anomalous Hall effect; noncollinear antiferromagnet; strain effect; L1(0) and L1(2) alloys; 75; 50; Ee; 47; -m; 70; -i; MAGNETIC-STRUCTURES;

D O I：

10.1007/s11433-019-1525-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Antiferromagnets (AFMs) with chiral noncollinear spin structure have attracted great attention in recent years. However, the existing research has mainly focused on hexagonal chiral AFMs, such as Mn3Sn, Mn3Ga, Mn3Ge with low crystalline symmetry. Here, we present our systematical study for the face-centered cubic noncollinear antiferromagnetic Mn3Pt. By varying the alloy composition (x), we have successfully fabricated antiferromagnetic Mn1-xPtx epitaxial films on MgO substrates and have observed a crystalline structure transition from L1(0) MnPt to L1(2) Mn3Pt. The Mn3Pt exhibits a large anomalous Hall effect, which is in the same order of magnitude as those of ferromagnetic materials. Moreover, a large thickness-evolved strain effect is revealed in Mn3Pt films by X-ray diffraction (XRD) analysis based on the Scherrer method. Our work explores Mn3Pt as a promising candidate for topological antiferromagnetic spintronics.

引用

页数：6

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