Single crystal growth of 1T-VSe${}_2$ by molten salt flux method

Abstract

VSe${}_2$ is a highly promising van der Waals (vdW) material for applications in electronics, spintronics, and optoelectronics. Here, we report single crystal growth of 1T-VSe${}_2$ by flux method using eutectic of NaCl/KCl molten salt. The typical size of as-grown VSe${}_2$ single crystals is 5 $\times$ 4 $\times$ 0.1~mm${}^3$. The elemental composition and homogeneity of the crystals were examined by energy dispersive x-ray spectroscopy, which is consistent with the stoichiometric ratio of VSe${}_2$. The crystallographic [001] direction has been determined by x-ray diffraction. Raman measurement confirms that the 1T phase of VSe${}_2$ has been formed. Temperature-dependent resistivity measurement exhibits a transition around 104 K due to the formation of the charge density wave phase.

4 pages, 5 figures