Abstract:
Magnetic properties of matter play an important role in human life. This requires developing the physical theories that describe magnetic phenomena. One of these important fields is the magnetic properties of superconductors. Till now there is no satisfactory theory that fully explains these magnetic properties of superconductors.
This set back encourages constructing a model based on temperature dependent Schrodinger equation to explain superconductivity destroy by external magnetic field. By using quantum resistance relation and treating resistance as consisting of real superconducting and imaginary part in one approach and positive superconducting beside negative part, it was shown that superconductivity is destroyed when the external magnetic field exceeds a certain critical value. This result agrees with observations. The magnetic field is shown also to be associated with the energy gap which depends on critical temperature. This relation also agrees with the empirical relation.
