Calculation of the density of electron states in single-band superconducting alloys

Expressions for the density function of electron states and related quantities for a singleband superconductor with low concentration of paramagnetic impurity are used to calculate the low-temperature electron entropy, the ratio of the coefficient of absorption of ultrasound in the superconducting phase to the corresponding coefficient of the normal metal, and also the coefficient of electron thermal conductivity with allowance for scattering of electrons on the impurity. The expressions allow a passage to the limit of a pure material or material with nonmagnetic impurity.