MnPS3 spin-flop transition-induced anomalous Hall effect in graphite flake via van der Waals proximity coupling

Ying Zhang; Wenhui Wang; Meng Huang; Ping Liu; Guojing Hu; Chao Feng; Xueyan Lei; Meng Gu; Hongxin Yang; Kaihui Liu; Bin Xiang; Yalin Lu

doi:10.1039/D0NR05314G

MnPS₃ spin-flop transition-induced anomalous Hall effect in graphite flake via van der Waals proximity coupling†

Ying Zhang,

‡^a Wenhui Wang,‡^b Meng Huang,^a Ping Liu,^a Guojing Hu,^a Chao Feng,^a Xueyan Lei,

^a Meng Gu,^c Hongxin Yang,^d Kaihui Liu,

^e Bin Xiang

*^af and Yalin Lu^af

Author affiliations

* Corresponding authors

^a Hefei National Research Center for Physical Sciences at the Microscale, Department of Materials Science & Engineering, CAS Key Lab of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui 230026, China
E-mail: binxiang@ustc.edu.cn

^b Research Laboratory for Quantum Materials, Singapore University of Technology and Design, Singapore 487372

^c Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, China

^d CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

^e State Key Laboratory for Mesoscopic Physics, Collaborative Innovation Center of Quantum Matter, School of Physics, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China

^f Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China, Hefei 230026, P. R. China

Abstract

Detection of the antiferromagnetic (AFM) state is an important issue for the application of two-dimensional (2D) antiferromagnets in spintronics, and interfacial exchange coupling is a highly efficient means to detect AFM order. However, there are no experimental reports of AFM state detection in van der Waals heterostructures, based on which 2D AFM spintronics can be developed. In this paper, we report a spin flop transition (SFT)-induced anomalous Hall effect in a heterostructure of MnPS₃/graphite flake (GF) through van der Waals proximity coupling. The scaling behavior study and theoretical calculations confirm that the SFT in AFM MnPS₃ can generate momentum-space nonzero Berry curvature integration in the adjacent GF. Our work opens a path for the realization of AFM state detection through the proximity effect in a stacking structure, thereby promoting the application of 2D antiferromagnets in future 2D spintronics.

Nanoscale

MnPS₃ spin-flop transition-induced anomalous Hall effect in graphite flake via van der Waals proximity coupling†

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MnPS₃ spin-flop transition-induced anomalous Hall effect in graphite flake via van der Waals proximity coupling

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