Superconductivity in few-layer NbS$_{2}$ and TaS$_{2}$ prepared by mechanical exfoliation

2D materials with novel physical properties are useful for scientific inquiries and technological applications. The superconducting 2D materials provide an opportunity to explore the superconductivity in the 2D limit. In this work, the superconductivity in few layer 2H-NbS$_{2}$ and 2H-TaS$_{2}$ are studied. Single crystals are obtained by vapor transport method and flakes are obtained by mechanical exfoliation. In NbS$_{2}$ flakes, the superconducting transition temperature (T$_{c}$) monotonically decreases with decreasing thickness. On the other hand, T$_{c}$ of TaS$_{2}$ flakes appears to monotonically increase as the flake gets thinner and the signature of CDW transition in R vs. T curves eventually disappear. The electric double layer transistors (EDLTs) of NbS$_{2}$ and TaS$_{2}$ flakes are also being fabricated to tune superconductivity in these 2D crystals. The results on these experiments will be presented.