ANOMALOUS PROXIMITY EFFECT IN MESOSCOPIC NORMAL-METAL-SUPERCONDUCTOR STRUCTURES

Anomalous corrections to the resistance have been found in mesoscopic normal-metal-superconductor (NS) structures below T-C. They differ fro m those described by the classical ''proximity'' theory in sensitivity to magnetic field, temperature, and rf irradiation. Contrary to the c ase of the classical proximity effect the anomalous corrections can be both positive and negative. A possible model which describes the anom alous corrections reported here is discussed.