Symmetry-protected superconductivity in ultrathin layered transition metal dichalcogenides

Recent studies of few-layer NbSe$_2$ and MoS$_2$ have resulted in reports of a robust two-dimensional superconducting states at low temperature. Notably, in both cases the superconductivity persists in the presence of external in-plane magnetic fields significantly larger than the Pauli paramagnetic limit. Following this work, we investigate related phenomena in ultrathin 2H-TaS$_2$ using low-temperature, high-field magnetotransport to probe the associated superconducting critical behavior. We discuss the connection between the observed transport, spin-orbit coupling, and Ising superconductivity resulting from dimensional and symmetry considerations.