DIRECT NUMERICAL SIMULATIONS ON SUPERCONDUCTING PLASMA EXCITATION BY FLUX-FLOW IN LAYERED HIGH-T-C SUPERCONDUCTORS

We perform direct numerical simulations solving the equation of motion of vortices and the Maxwell equation combined with the London equatio n in order to investigate how the vortex motion excites the c-axis pol arized plasma mode in highly anisotropic superconductors. We find that under both the presence of c-axis parallel transport currents and c-a xis perpendicular applied magnetic field, the moving velocity of vorti ces has two components, which correspond to a constant flux flow veloc ity and an oscillating component caused by interactions with the super conducting plasma mode. Furthermore, we show that if no damping proces s exists, the power of the excited plasma can become very large, withi n accessible conditions in real layered high-T-c superconductors, whil e the excited c-axis polarized electric field is proportional to the a pplied transport current and magnetic field, respectively. (C) 1997 El sevier Science B.V.