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arXiv · 0910.5161

A Cooper pair light emitting diode

H. Sasakura·S. Kuramitsu·Y. Hayashi·K. Tanaka·T. Akazaki·E. Hanamura·R. Inoue·H. Takayanagi·Y. Asano·I. Suemune
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Abstract

We demonstrate Cooper-pair's drastic enhancement effect on band-to-band radiative recombination in a semiconductor. Electron Cooper pairs injected from a superconducting electrode into an active layer by the proximity effect recombine with holes injected from a p-type electrode and dramatically accelerate the photon generation rates of a light emitting diode in the optical-fiber communication band. Cooper pairs are the condensation of electrons at a spin-singlet quantum state and this condensation leads to the observed enhancement of the electric-dipole transitions. Our results indicate the possibility to open up new interdisciplinary fields between superconductivity and optoelectronics.

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H. Sasakura, S. Kuramitsu, Y. Hayashi, K. Tanaka, T. Akazaki, E. Hanamura, R. Inoue, H. Takayanagi, Y. Asano, I. Suemune. 2009-10-27. A Cooper pair light emitting diode. https://doi.org/10.1103/physrevlett.107.157403

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