Current-voltage relation for Josephson junctions with ferromagnetic insulator

We calculate the current-voltage relation for planar superconducting d-wave junctions including a ferromagnetic insulating layer. The height of the current peak near zero-bias voltage due to the formation of zero energy states is reduced with the increase of the magnitude of the exchange interaction in ferromagnetic insulator. (C) 2000 Elsevier Science B.V, All rights reserved.