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Optical Properties of Bielectron—Impurity Complexes
Author(s) -
Kovarskii V. A.,
Sinyavskii E. P.,
Chernysh L. V.
Publication year - 1984
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.2221230234
Subject(s) - impurity , atomic physics , adiabatic theorem , adiabatic process , series (stratigraphy) , electron , quasiparticle , wavelength , physics , line (geometry) , chemistry , condensed matter physics , quantum mechanics , paleontology , superconductivity , geometry , mathematics , biology
A calculation of the energy spectrum of the bielectron‐impurity complex is performed. If the energy of relative motion of the two electrons which form the bielectron is much greater than the energy of the bielectron‐impurity interaction, the problem may be solved in the adiabatic approximation for the separation of “rapid” (bielectron) and “slow” motion of the bielectron as a quasiparticle in the field of the impurity potential. It is shown that the bielectron‐impurity complex spectrum has the form of an inverted hydrogenic series and near each line of the inverted hydrogenic series from the long wavelength region, the lines of the forward hydrogenic series are located. The intensities of phototransitions on the bielectron‐impurity complex levels are calculated, too. The dependence of the absorption light coefficient versus the main quantum number of the inverted hydrogenic series is investigated. The theory developed is compared qualitatively with experimental data.