title: Luminescence of a cooper pair.
abstract: This Letter theoretically discusses the photon emission spectra of a superconducting p-n junction. On the basis of the second order perturbation theory for electron-photon interaction, we show that the recombination of a Cooper pair with two p-type carriers causes 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.
authors.affiliation: Department of Applied Physics, Hokkaido University, Sapporo 060-8628, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Asano
authors.forename: Ikuo
authors.initials: I
authors.lastname: Suemune
authors.forename: Hideaki
authors.initials: H
authors.lastname: Takayanagi
authors.forename: Eiichi
authors.initials: E
authors.lastname: Hanamura