Screening of excitons in cuprous oxide
Agekyan V. F., Vasil'ev N. N., Stepanov Yu. A.
The absorption spectrum of Cu20 at a high density of free carriers produced by two-photon light excitation, is investigated. A successive dissociation of excitons to η — 3 and a contraction of the forbidden band as a result of small absolute displacement of exciton lines was observed.