Effect of nonmagnetic and magnetic impurities on the specific heat jump in anisotropic superconductors

Leonid A. Openov
2004 Physical Review B  
The specific-heat jump Δ C at a critical temperature T_c in an anisotropic superconductor containing both potential and spin-flip scatterers is calculated within a weak-coupling mean-field approximation. It is shown that the presence of even a small amount of spin-flip scatterers in the sample leads to a drastic change in the dependence of Δ C on T_c in a disordered (d+s)-wave or a strongly anisotropic s-wave superconductor. The implications for experimental tests for the presence of an s-wave
more » ... dmixture in the superconducting order parameter of high-T_c superconductors are discussed.
doi:10.1103/physrevb.69.224516 fatcat:vcflfblluvadph6l35d22h5mtm