A superconductor is characterized by two features: the conduction of electrons with zero electrical resistance and the repelling of magnetic field lines. A minimum temperature is required for supercon...A superconductor is characterized by two features: the conduction of electrons with zero electrical resistance and the repelling of magnetic field lines. A minimum temperature is required for superconductivity to occur. A strong magnetic field destroys superconductivity. Superconductivity can be explain in terms of Cooper pairs.