1978•physica status solidi (b)Requires access
The Singularities of the Small Polaron Effective Mass
R. Mańka
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Abstract
Abstract Using the Bogolyubov inequality, a more general polaron dispersion relation than known up to now is obtained. The effective polaron mass derived from it for high temperatures and for a strong electron–phonon coupling is the same, but for semiconductors with a suitable wide electron band, the effective mass is discontinuous as a function of the temperature and the electron–phonon coupling constant.