This paper theoretically discusses the photon emission spectra of a superconducting pn-junction. On the basis of the second order perturbation theory for electron-photon interaction, we show that the recombination of a Cooper with two p-type carriers causes drastic enhancement of the luminescence intensity. The calculated results of photon emission spectra explain characteristic features of observed signal in an recent experiment. Our results indicate high functionalities of superconducting light-emitting devices.
@article{arxiv.0905.1182,
title = {Luminescence of a Cooper Pair},
author = {Yasuhiro Asano and Ikuo Suemune and Hideaki Takayanagi and Eiichi Hanamura},
journal= {arXiv preprint arXiv:0905.1182},
year = {2010}
}