a) Why good conductors do not exhibit superconductivity? Explain with discussing the superconducting mechanism according to quantum mechanics. b) Explain the analogy between the hole in a type 1 superconductor and a bulk of type two superconductor in terms of cooling procedure. c) Explain how the expulsion of the flux from the interior of the superconducting specimen implies that the superconducting state is a thermodynamic equilibrium state.

a) Why good conductors do not exhibit superconductivity? Explain with discussing the superconducting mechanism according to quantum mechanics. b) Explain the analogy between the hole in a type 1 superconductor and a bulk of type two superconductor in terms of cooling procedure. c) Explain how the expulsion of the flux from the interior of the superconducting specimen implies that the superconducting state is a thermodynamic equilibrium state.