Noncollinear ferrimagnetism and anomalous Hall effects in Mn4N thin films

被引：13

作者：

He, Yangkun ^{[1
]}

Lenne, Simon ^{[1
]}

Gercsi, Zsolt ^{[1
]}

Atcheson, Gwenael ^{[1
]}

O'Brien, Jack ^{[1
]}

Fruchart, Daniel ^{[2
,3
]}

Rode, Karsten ^{[1
]}

Coey, J. M. D. ^{[1
]}

机构：

[1] Trinity Coll Dublin, Sch Phys, CRANN, Dublin, Ireland

[2] CNRS, Inst Neel, Dept QUEST, F-38042 Grenoble 9, France

[3] UGA, F-38042 Grenoble 9, France

来源：

PHYSICAL REVIEW B | 2022年 / 106卷 / 06期

基金：

爱尔兰科学基金会;

关键词：

MAGNETIC-STRUCTURE; ANTIFERROMAGNET;

D O I：

10.1103/PhysRevB.106.L060409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thin films of Mn4N and related ternary metallic perovskites with perpendicular anisotropy are interesting for spintronics, but their magnetic structures differ from the triangular ferrimagnetism of the bulk. A temperature-independent anomalous Hall conductivity of -90 52-1 cm-1 was found in Mn4N films, in addition to the normal temperature-dependent contribution. Based on known spin structures of bulk Mn3ZN compounds and the distance dependence of the Mn-Mn exchange for first- and second-neighbor Mn-Mn pairs, we propose a topological noncollinear spin structure for the Mn4N films with perpendicular anisotropy. The Letter shows how a small change in symmetry of the spin structure can influence the magnetotransport properties of frustrated ferrimagnetic films.

引用

页数：6

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