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Deviations of the exciton level spectrum in cuprous oxide from the hydrogen series

arXiv

Authors: Florian Schöne, Sjard-Ole Krüger, Peter Grünwald, Marc Aßmann, Julian Heckötter, Johannes Thewes, Dietmar Fröhlich, Manfred Bayer, Heinrich Stolz, Stefan Scheel

Year

2015

Paper ID

26081

Status

Preprint

Abstract Read

~2 min

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Abstract

Recent high-resolution absorption spectroscopy on excited excitons in cuprous oxide [Nature (London) 514, 343 (2014)] has revealed significant deviations of their spectrum from that of the ideal hydrogen-like series. Here we show that the complex band dispersion of the crystal, which determines the kinetic energy of electrons and holes, strongly affects the exciton binding energy. Specifically, we show that the nonparabolicity of the band dispersion is the main cause of the deviation from the hydrogen series. Experimental data collected from high-resolution absorption spectroscopy in electric fields validate the assignment of the deviation to the nonparabolicity of the band dispersion.

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Recent high-resolution absorption spectroscopy on excited excitons in cuprous oxide [Nature (London) 514, 343 (2014)] has revealed significant deviations of their spectrum from...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1511.05458 [2] arXiv https://arxiv.org/abs/1511.05458 [3] Publisher https://arxiv.org/abs/1511.05458

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