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Binding Energy of the Excitonic Ions X − and X 2 + in a Weak Electric Field
Author(s) -
Katih M.,
Diouri J.,
Feddi E.
Publication year - 1993
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.2221750206
Subject(s) - electric field , ion , binding energy , degeneracy (biology) , effective mass (spring–mass system) , physics , atomic physics , isotropy , field (mathematics) , spin (aerodynamics) , energy (signal processing) , condensed matter physics , quantum mechanics , mathematics , thermodynamics , bioinformatics , pure mathematics , biology
The effect of a uniform and weak electric field on the ground state of the excitonic ions X − and X 2 +is calculated using a variational method. The calculation is given for Γ direct gap materials in the framework of an isotropic effective mass approximation with no account of spin and band degeneracy effects. The binding energy of X − and X 2 +complexes, as a function of the mass ratio parameter m * e / m * h and the field strength F , is presented.