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arXiv · 1807.05896

Interactions between Rydberg excitons in Cu$_2$O

Valentin Walther·Sjard Ole Krüger·Stefan Scheel·Thomas Pohl
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Abstract

Highly-excited states of excitons in cuprous oxide have recently been observed at a record quantum number of up to $n=25$. Here, we evaluate the long-range interactions between pairs of Rydberg excitons in Cu$_2$O, which are due to direct Coulomb forces rather than short-range collisions typically considered for ground state excitons. A full numerical analysis is supplemented by the van der Waals asymptotics at large exciton separations, including the angular dependence of the potential surfaces.

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Valentin Walther, Sjard Ole Krüger, Stefan Scheel, Thomas Pohl. 2018-07-16. Interactions between Rydberg excitons in Cu$_2$O. https://doi.org/10.1103/physrevb.98.165201

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