Aspects of topological superconductivity in SnTaS₂

Topological superconductivity has attracted considerable attention in the recent past with the promise of potential applications in quantum computation. Layered dichalcogenides in particular have provided the platform to explore such nuanced features. We have recently reported evidence for topological superconductivity in Sr intercalated Bi₂Se₃ .  In the present study we shall discuss synthesis and characterization of nodal line semimetal SnTaS₂. Measurements on our as grown single crystals of SnTaS₂ shows superconductivity below T_c  ̴3K. High quality single crystals (RRR ~ 500) were prepared using chemical vapor transport method. The temperature dependent resistivity shows linear behavior at higher temperatures, confirming the dominance of electron phonon scattering mechanism. The magnetization studies support the material to be a type II superconductor. The anisotropy in upper critical magnetic field (Hc₂) is clearly observed in resistivity plots in two different orientations of single crystal.  In particular, we would compare the characteristics of SnTaS₂ vis a vis Sr_xBi₂Se₃ , specifically on the aspects of topological superconductivity.