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Local fields and electric dipole moment of localized impurities in crystals
Author(s) -
Glinchuk M. D.,
Deigen M. F.,
Rozhko V. S.
Publication year - 1979
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.2220940106
Subject(s) - electric dipole transition , transition dipole moment , dipole , magnetic dipole , electric dipole moment , moment (physics) , bond dipole moment , impurity , condensed matter physics , physics , electric field , electron , magnetic dipole transition , radius , field (mathematics) , crystal (programming language) , ion , atomic physics , matrix (chemical analysis) , chemistry , quantum mechanics , mathematics , computer security , chromatography , computer science , pure mathematics , programming language
Dipole transition matrix elements of impurity centres are estimated accounting for the “acting” electric field in the crystal E a . E a is shown to depend on the type of wave functions and radii of states among which the transition occurs. Some examples where E a is essential are considered. It is found, for example, that the dipole moment of the localized electron is expressed via oscillator forces submitted to the sum rule only in the case when the radius of electron state is large enough. A corresponding criterion is given. The examination of matrix elements in the dipole transitions of off‐centre ions shows that in this case the acting field is near to the Lorentz field.