Isolation and Characterization of Few-Layer Manganese Thiophosphite

Abstract

This work reports an experimental study on an antiferromagnetic honeycomb lattice of MnPS 3 that couples the valley degree of freedom to a macroscopic antiferromagnetic order. The crystal structure of MnPS 3 is identified by high-resolution scanning transmission electron microscopy. Layer-dependent angle-resolved polarized Raman fingerprints of the MnPS 3 crystal are obtained, and the Raman peak at 383 cm –1 exhibits 100% polarity. Temperature dependences of anisotropic magnetic susceptibility of the MnPS 3 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 3 are realized by the liquid gating technique. The conducting channel of MnPS 3 offers a platform for exploring the spin/valleytronics and magnetic orders in 2D limitation.