Publikace
Abstrakt
In the present work I study temperature dependence of magnetic penetration depth in superconductors which allows us to determine the symmetry of the order parameter, important for theoretical models. In conventional superconductors we talk about s-symetry.
Energy gap is isotropic and as a consequence of this fact penetration depth grows exponencialy with the temperature. On the other hand, in unconventional superconductors with d-symetry we find the power dependence on the temperature.
Anyway the exponent depends on impurities and structure of the material and the influence of these parametrs is not completely clear at the moment.