We calculate the transition line of the first-order melting of vortex lattice in a three-dimensional type-II superconductor in fields of several Tesla, using the results from the density-functional theory of vortex melting in two-dimensions and a self-consistent Hartree treatment of correlations along the field. The result is in quantitative agreement with experiment. The temperature width of t...

The effect of nonmagnetic disorder on the pairing amplitude is studied by means of a perturbation method. Using an extended one band Hubbard model with an intersite attraction we analyze various solutions of p–wave pairing symmetry and discuss their instability calculating fluctuations of order parameter. The model is applied to describe the effect of disorder in Sr2RuO4. The results shows that...

The interplay of superconductivity and disorder generates a wealth complex phenomena. In particular, the peculiar structure diffusive electronic wavefunctions is predicted to increase superconducting critical temperature in some range disorder. this work, we use an epitaxial monolayer lead showing simple band homogenous structural as model system 2D superconductor weak-antilocalization regime. ...

In this paper I calculate the possible alteration of the gravitational field in a superconductor by using the time-dependent Ginzburg-Landau equations (TDGL). I compare the behaviour of a high-Tc superconductor (HTCS) like YBa2Cu3O7 (YBCO) with a classical low-Tc superconductor (LTCS) like Pb. Finally, I discuss what values of the parameters characterizing a superconductor can enhance the reduc...