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Polaron state of an electron near a structural instability
Author(s) -
Batyev E. G.,
Efanov A. V.
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.2220900203
Subject(s) - polaron , condensed matter physics , instability , electron , physics , phase transition , phonon , quantum mechanics
The formation of a Pekar polaron‐type self‐trapped state by an electron in ferro‐ and antiferroelectrics near the phase transition point is shown to be possible in the case when there is no strong coupling polaron far from the transition. This feature is due to the “soft mode” in the phonon spectrum. The properties of the polaron strongly depend on the proximity to the phase transition point.