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The anomalous Stark shift of the ground state energy of a donor–acceptor pair in an electric field
Author(s) -
Arepev Yu. D.,
Oleinik V. P.,
Salkov E. A.,
Tolpygo K. B.
Publication year - 1978
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.2220900139
Subject(s) - stark effect , bohr radius , electric field , ground state , atomic physics , quantum confined stark effect , wave function , physics , acceptor , radius , electron , polarization (electrochemistry) , chemistry , condensed matter physics , quantum mechanics , computer security , computer science
Abstract Photon energies emitted from donor–acceptor pairs (DAP) in semiconductors in an electric field are calculated using a variational procedure. The linear combinations of s‐ and p‐type hydrogen‐like functions are used as trial wave functions of the pair. The magnitude of the Stark shift of the DAP ground state energy as a function R (the distance between the donor and acceptor) and θ (the angle between R and electric field direction E ) are obtained for different values of E and m e * / m h *( m e *electron effective mass, m h *the same for a hole). It is shown that at small values of R and cos θ < 0 ( R < a B , a B Bohr radius) the Stark shift is positive due to the strong polarization of the electron and hole clouds in the electric field.