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Excitonic Effects on the Valence Absorption Edge of Solid Rare Gases
Author(s) -
Rössler U.,
Schütz O.
Publication year - 1973
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220560209
Subject(s) - pseudopotential , exciton , atomic physics , valence (chemistry) , coulomb , formalism (music) , chemistry , wave function , oscillator strength , binding energy , valence electron , electron , valence band , absorption edge , physics , spectral line , quantum mechanics , band gap , art , musical , visual arts
Bound exciton states and excitonic resonances have been computed at the valence absorption edge of the solid rare gases Xe, Kr, and Ar. A two‐band model was used to calculate the Green's function of the uncoupled electron–hole pairs and the Coulomb interaction was treated in the resolvent formalism. The matrix elements of the electron–hole interaction were calculated in the pseudopotential approximation. The computed binding energies, oscillator strengths, relative hydrogenic defects, and spectral functions are compared with experimental data.