Abstract
We investigated the transport characteristics between two superconducting electrodes atthe n-type semiconductor side of a superconductor-based LED where a Josephson junctionis formed. The characteristics of the Josephson junction are found to be modulated byapplying voltage to the normal electrode at the p-type semiconductor side. Themechanism of the modulation can be categorized into three regimes, the gate control,the radiative recombination process and the nonequilibrium carrier injection,depending on the current injection from the p-side. Among these three regimes,the Josephson junction characteristics show an extraordinary sensitivity to theradiative recombination process, which we estimate as the recombination efficiency.
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