Resistance enhancement of the intrinsic surface junction of Bi2Sr2CaCu2O8+x single crystal under radio-frequency irradiation

Abstract

It is found that radio-frequency irradiation significantly enhances the c-axis resistance near the superconducting transition of the CuO2 bi-layer located on the surface of a Bi2Sr2CaCu2O8+x single crystal. The features of this resistance anomaly are similar to those observed recently in the mesoscopic aluminum wires and structures with normal-metal/supeconductor interfaces, where the resistance anomaly is caused by the nonequilibrium charge-imbalance effect.