Heat capacity evidence for conventional superconductivity in the Type-II Dirac semi-metal PdTe${}_2$

Abstract

We use electrical transport, magnetoresistance, and heat capacity measurements on high quality single crystals of the recently discovered superconducting Type-II Dirac semi-metal PdTe${}_2$, to probe the nature of it's superconducting phase. The magnitude of the electronic heat capacity anomaly at $T_c$, the low temperature exponential $T$ dependence of the heat capacity, and a conventional $H-T$ phase diagram establish that the superconductivity in PdTe${}_2$ is conventional in nature despite the presence of a topologically non-trivial Fermi surface band which contributes to the electrical conduction.

4 pages, 4 figures