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Deformation Potential Approach to the Estimation of the Peierls Phase Transition Temperature
Author(s) -
Zhang Hongqun,
Huang Yuanhe,
Liu Ruozhuang
Publication year - 1993
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.2221780114
Subject(s) - deformation (meteorology) , condensed matter physics , phase transition , peierls transition , phonon , coupling (piping) , phase (matter) , coupling constant , crystal (programming language) , physics , materials science , thermodynamics , chemistry , quantum mechanics , meteorology , metallurgy , computer science , programming language
By means of the deformation potential theory, an expression for the electron‐phonon coupling constant g is derived, thereby a formula for the calculation of the Peierls phase transition temperature is obtained. As an illustration, this formula with the data calculated by a semiempirical crystal orbital method is used to compute the Peierls phase transition temperature of TTF‐TCNQ.