Isolation and Characterization of Few-Layer Manganese Thiophosphite.

Long, Gen; Zhang, Ting; Cai, Xiangbin; Hu, Jin; Cho, Chang-Woo; Xu, Shuigang; Shen, Junying; Wu, Zefei et al. · ACS Nano · 2017

basic_science · Level V

Where this comes from

Abstract

This work reports an experimental study on an antiferromagnetic honeycomb lattice of MnPS<sub>3</sub> that couples the valley degree of freedom to a macroscopic antiferromagnetic order. The crystal structure of MnPS<sub>3</sub> is identified by high-resolution scanning transmission electron microscopy. Layer-dependent angle-resolved polarized Raman fingerprints of the MnPS<sub>3</sub> crystal are obtained, and the Raman peak at 383 cm<sup>-1</sup> exhibits 100% polarity. Temperature dependences of anisotropic magnetic susceptibility of the MnPS<sub>3</sub> crystal are measured in a superconducting quantum interference device. Anisotropic behaviors of the magnetic moment are explored on the basis of the mean field approximation model. Ambipolar electronic conducting channels in MnPS<sub>3</sub> are realized by the liquid gating technique. The conducting channel of MnPS<sub>3</sub> offers a platform for exploring the spin/valleytronics and magnetic orders in 2D limitation.