Anderson phase-slip theory and loss mechanism of the motion of vortices insuperconductors

The loss mechanism of the super-current is discussed in the frame of Anders on phase-slip theory and G-L theory. In the discussion we also use vortex c onservation equations instead of Maxwell equations. It is found that this m ethod is more reasonable to apply the vortex motion induced energy loss in type II superconductors than the traditional deduction in terms of Maxwell equations. Moreover, we propose a new method to determine the effective pin ning energy of vortex lines in type II superconductors.