Synthesis of vanadium disulfide via chemical vapor deposition

Owing to its semiconducting nature, ability to harbor intrinsic magnetic anisotropy down to the monolayer limit and valley polarization, synthesis of the 2H phase of vanadium disulfide (VS₂) is of current interest. However, due to the existence of a variety of phases, as well as polymorphs for even a single given phase, the synthesis of 2H-VS₂ has been challenging by chemical vapor deposition (CVD). In this work, we show the CVD growth of two crystalline structures with hexagonal and rectangular symmetries having lateral size up to a few hundred microns using optical and atomic force microscopy. Preliminary studies of the hexagonal structure via Raman spectroscopy reveal signatures of 2H phase of VS₂. These findings and results from transportfrom transport, magnetic, and optical studies will be presented at the meeting.