Pressure Effects on the Superconducting Transition Temperature of Ferromagnetic Superconductors

Abstract

The pressure effects on the superconducting
transition temperature of ferromagnetic superconductors
are investigated numerically. The authors obtained the
analytical expression of the pressure coefficients of the
superconducting transition temperature with the
superconducting gap with line nodes and with the
superconducting gap similar to the thin film of A2 phase in
liquid 3He [1], [2] based on the free energy derived from the
microscopic Hamiltonian[3], [4]. It is assumed that the
Curie temperature is much higher than the
superconducting transition temperatures. There has been
no numerical investigation of pressure effects on the
superconducting transition temperatures of ferromagnetic
superconductors based on the microscopic model although
Huang et al. investigate the pressure effects on the
superconductors