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Comment on “the band gap excitons in PbI2”

✍ Scribed by G. Harbeke; E. Tosatti

Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
333 KB
Volume
37
Category
Article
ISSN
0022-3697

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## Perturbation is applied to study of the Wannier-Mott excitons in direct band gap cubic semiconductors with a fourfold degenerate highest valence band. The tine structure of exciton energy levels is investigated. General formulae are derived for the matrix elements of the perturbation. From th