Ferroelectric polarization control of spin states in Mn4N/PMN-PT heterostructures revealed by topological Hall effect

被引：11

作者：

Wang, G. L. ^{[1
]}

Wu, S. X. ^{[1
]}

Zhou, W. Q. ^{[1
]}

Li, H. W. ^{[1
]}

Li, D. ^{[1
]}

Dai, T. ^{[1
]}

Kang, S. D. ^{[1
]}

Dang, S. ^{[1
]}

Ma, X. Y. ^{[1
]}

Hu, P. ^{[1
]}

Li, S. W. ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Mat Sci & Engn, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2018年 / 113卷 / 12期

关键词：

NONCOLLINEAR ANTIFERROMAGNET; ROOM-TEMPERATURE;

D O I：

10.1063/1.5043194

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Topological Hall effect (THE) as one of spin-related effects originates from scalar spin chirality formed by non-coplanar spin structures, being a promising tool for probing the change of electron spin. Single-phase (022) Mn4N films with coplanar spin structures were prepared on unpoled ferroelectric [Pb(Mg1/3Nb2/3)O-3]0.67-[PbTiO3](0.33) (PMN-PT) substrates. The transport properties of Mn4N/PMN-PT have been investigated. The decreased magnetization and anomalous resistivity imply that the spin states of Mn4N are influenced by ferroelectric polarization of the substrate. The observation of THE in the Mn4N/PMN-PT heterostructure strongly supports that the spin states of Mn4N are modified. After poling PMN-PT, the enhanced THE peak magnitude verifies that the spin states of Mn4N are tuned by ferroelectric polarization. This study provides a non-magnetic method for manipulation of spin states, which could avoid the external magnetic field perturbations. Published by AIP Publishing.

引用

页数：4

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