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On the Peierls Transition in the Strong Correlation Limit of the Hubbard Chain
Author(s) -
Gasser W.,
Heiner E.
Publication year - 1981
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.2221030225
Subject(s) - limit (mathematics) , chain (unit) , hubbard model , condensed matter physics , distortion (music) , physics , peierls transition , electronic correlation , mathematical physics , quantum mechanics , mathematics , electron , mathematical analysis , superconductivity , amplifier , optoelectronics , cmos
The wave number k p of the Peierls distortion is determined for the Hubbard chain in the strong correlation limit at arbitrary electron occupation numbers n . Using approximations it is shown that k p a = 2π(1 – α)/(1 + α) holds, where α is given by α = 1 – n for n < 1 and by α = n – 1 for n > 1.