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Probing Bose-Einstein Condensation of Excitons with Electromagnetic Radiation

K. Johnsen·G. M. Kavoulakis
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Abstract

We examine the absorption spectrum of electromagnetic radiation from excitons, where an exciton in the $1s$ state absorbs a photon and makes a transition to the $2p$ state. We demonstrate that the absorption spectrum depends strongly on the quantum degeneracy of the exciton gas, and that it will generally manifest many-body effects. Based on our results we propose that absorption of infrared radiation could resolve recent contradictory experimental results on excitons in Cu$_2$O.

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K. Johnsen, G. M. Kavoulakis. 2000-06-07. Probing Bose-Einstein Condensation of Excitons with Electromagnetic Radiation. https://doi.org/10.1103/physrevlett.86.858

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