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Rydberg excitons in synthetic cuprous oxide Cu2O

Lynch, Stephen A.; Hodges, Chris; Mandal, Soumen; Langbein, Wolfgang; Singh, Ravi P.; Gallagher, Liam A.P.; Pritchett, Jon D.; Pizzey, Danielle; Rogers, Joshua P.; Adams, Charles S.; Jones, Matthew P.A.

Rydberg excitons in synthetic cuprous oxide Cu2O Thumbnail


Stephen A. Lynch

Chris Hodges

Soumen Mandal

Wolfgang Langbein

Ravi P. Singh

Joshua P. Rogers


High-lying Rydberg states of Mott-Wannier excitons are receiving considerable interest due to the possibility of adding long-range interactions to the physics of excitons. Here, we study Rydberg excitation in bulk synthetic cuprous oxide grown by the optical float zone technique and compare the result with natural samples. X-ray characterization confirms both materials are mostly single crystal, and midinfrared transmission spectroscopy revealed little difference between synthetic and natural material. The synthetic samples show principal quantum numbers up to n = 10 , exhibit additional absorption lines, plus enhanced spatial broadening and spatial inhomogeneity. Room temperature and cryogenic photoluminescence measurements reveal a significant quantity of copper vacancies in the synthetic material. These measurements provide a route towards achieving high- n excitons in synthetic crystals, opening a route to scalable quantum devices.


Lynch, S. A., Hodges, C., Mandal, S., Langbein, W., Singh, R. P., Gallagher, L. A., …Jones, M. P. (2021). Rydberg excitons in synthetic cuprous oxide Cu2O. Physical Review Materials, 5(8), Article 084602.

Journal Article Type Article
Acceptance Date Jul 30, 2021
Online Publication Date Aug 20, 2021
Publication Date 2021-08
Deposit Date Oct 27, 2021
Publicly Available Date Nov 9, 2021
Journal Physical Review Materials
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 5
Issue 8
Article Number 084602


Published Journal Article (2.9 Mb)

Copyright Statement
Reprinted with permission from the American Physical Society: Lynch, Stephen A., Hodges, Chris, Mandal, Soumen, Langbein, Wolfgang, Singh, Ravi P., Gallagher, Liam A. P., Pritchett, Jon D., Pizzey, Danielle, Rogers, Joshua P., Adams, Charles S. & Jones, Matthew P. A. (2021). Rydberg excitons in synthetic cuprous oxide Cu2O. Physical Review Materials 5(8): 084602. © (2021) by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.

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