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Electron–Phonon Interaction in the Vicinity of the van Hove Critical Point
Author(s) -
Drozhov Yu. P.
Publication year - 1980
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.2220980244
Subject(s) - condensed matter physics , physics , electron , phonon , coupling constant , critical point (mathematics) , perturbation theory (quantum mechanics) , quantum mechanics , mathematical analysis , mathematics
The electron–phonon interaction in the vicinity of the van Hove critical point M 1 is considered without making use of the perturbation theory. The characteristics of the charge carriers located near such a point (dispersion law, density of states) are shown to vary considerably even if the coupling constant is small. The contribution of the electrons in the vicinity of the point M 1 to the transport properties is discussed.