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Commensurate‐Incommensurate Transition in the Quasi‐One‐Dimensional Fröhlich Model with a Nearly Half‐Filled Band
Author(s) -
Mertsching J.,
Fischbeck H. J.
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.2220990103
Subject(s) - condensed matter physics , charge density wave , phase transition , harmonics , transition point , field (mathematics) , plane (geometry) , physics , quantum mechanics , geometry , mathematics , thermodynamics , superconductivity , voltage , pure mathematics
The mean‐field approximation of the commensurate‐incommensurate (C‐IC) phase transition in the one‐dimensional Fröhlich model with a nearly half‐filled band is studied near Leung's triple point, including up to 19 harmonics of the charge‐density wave. The C‐IC transition appears to be discontinuous, and the C and 1C phases coexist in a small region of the temperature‐density plane.