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arXiv · 2512.06893

Interactions of electrons and Rydberg excitons in two-dimensional semiconductors

Arthur Christianen·Anna M. Seiler·Alperen Tüğen·Ataç İmamoğlu
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Abstract

Rydberg excitons in two-dimensional semiconductors provide sensitive and non-destructive probes of physics in proximal sample layers that host correlated electronic states. In particular, electron or hole doping of the sample layer is heralded by a strong frequency shift and loss of transition strength of 2s excitons in the sensor layer; these features have been attributed to the formation of a bound state of a 2s exciton and a remote electron. Through a theoretical analysis of exciton-electron scattering, we show that the experimental spectra can only be explained by electron-mediated hybridization of 2s, 2p and interlayer excitons, leading to a new type of many-body state which we term Rydberg attractive polaron. We anticipate that this new understanding will ensure a more accurate assessment of the signatures of correlated electrons in two dimensional materials.

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Arthur Christianen, Anna M. Seiler, Alperen Tüğen, Ataç İmamoğlu. 2025-12-07. Interactions of electrons and Rydberg excitons in two-dimensional semiconductors. https://arxiv.org/abs/2512.06893

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