  The thermodynamic parameters of the superconducting state in PtH at the
pressure 76 GPa have been examined. The calculations have been carried out in
the framework of the Eliashberg formalism. It has been found that the critical
temperature changes in the range from 30.6 K to 16.8 K, depending on the
assumed value of the Coulomb pseudopotential (0.1, 0.2 and 0.3). The other
thermodynamic quantities differ significantly from the predictions of the
classical BCS theory. In particular: (i) The parameter which corresponds to the
superconducting band gap reaches the values from 4.25 to 3.98. (ii) The ratio
of the specific heat jump to the specific heat in the normal state takes the
values from 2.07 to 1.97. (iii) Finally, the parameter for the low-temperature
thermodynamic critical field is in the range from 0.145 to 0.156.

Superconductivity