Ginzburg-Landau Expansion and the Slope of the Upper Critical Field in Disordered Superconductors with Anisotropic Pairing

A. I. Posazhennikova, M. V. Sadovskii

It is demonstrated that the slope of the upper critical field $|d{H}_{c2}/dT{|}_{T_c}$ in superconductors with $d$-wave pairing drops rather fast with concentration of normal impurit…