Anisotropic magnetic properties and tunable conductivity in two-dimensional layered NaCrX2 (X=Te,Se,S) single crystals

Jiale Huang, Bingxian Shi, Feihao Pan, Jinchen Wang, Juanjuan Liu, Daye Xu, Hongxia Zhang, Tianlong Xia, and Peng Cheng
Phys. Rev. Materials 6, 094013 – Published 30 September 2022
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Abstract

Monolayer NaCrX2 (X=Te,Se,S) was theoretically proposed to be a two-dimensional intrinsic ferromagnetic semiconductor, although its physical properties have not been thoroughly investigated in bulk single crystals. We report the single-crystal growth, structural, magnetic, and electronic transport properties of NaCr(Te1xSex)2 (0x1) and NaCrS2. For NaCr(Te1xSex)2, the strong perpendicular magnetic anisotropy of NaCrTe2 can be gradually tuned to be a nearly isotropic one by Se doping. Meanwhile, a systematic change in the conductivity with increasing x is observed, displaying a doping-induced metal-insulator-like transition. Under magnetic field larger than 30 kOe, both NaCrTe2 and NaCrSe2 can be polarized to a ferromagnetic state. However, for NaCrS2, robust antiferromagnetism is observed up to 70 kOe, and two field-induced metamagnetic transitions are identified along Hab. These intriguing properties together with the potential to be exfoliated down to few-layer thickness make NaCrX2 (X=Te,Se,S) promising for exploring spintronic applications.

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  • Received 16 April 2022
  • Revised 12 September 2022
  • Accepted 23 September 2022

DOI:https://doi.org/10.1103/PhysRevMaterials.6.094013

©2022 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Jiale Huang, Bingxian Shi, Feihao Pan, Jinchen Wang, Juanjuan Liu, Daye Xu, Hongxia Zhang, Tianlong Xia, and Peng Cheng*

  • Laboratory for Neutron Scattering and Beijing Key Laboratory of Optoelectronic Functional Materials and MicroNano Devices, Department of Physics, Renmin University of China, Beijing 100872, China

  • *Corresponding author: pcheng@ruc.edu.cn

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Issue

Vol. 6, Iss. 9 — September 2022

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