  Recent Angle-Resolved Photo-emission Spectroscopy (ARPES) experiments [Phys.
Rev. Lett. 130, 046402 (2023)] on PdTe, a 3D-Dirac semimetal and a
superconductor with the transition temperature Tc ~ 4.3 K, have revealed
compelling evidence of the presence of bulk nodes in the superconducting order
parameter. To investigate the validity of this proposition, here we present a
detailed investigation of the magnetic field dependence of the specific heat of
PdTe down to temperatures ~ 58 mK. We observed that the low temperature
specific heat of PdTe with an externally applied magnetic field exhibits a
power-law field dependence, a characteristic of unconventional
superconductivity. Furthermore, the zero-field low-temperature electronic
specific heat follows a cubic temperature dependence, which is a signature of
the presence of bulk point nodes in PdTe. These intriguing observations suggest
that PdTe is a rare and fascinating topological material that exhibits both
Dirac semimetallic properties and superconductivity with point nodal gap
symmetry.
