Theoretical Studies on Phase Transitions in Quasi-One-Dimensional Molecular Conductors

A review is given for recent theoretical studies on phase transitions in quasi-one-dimensional molecular conductors with a quarter-filled band. By lowering temperature, charge transfer salts exhibit a variety of transitions accompanying symmetry breaking, such as charge ordering, lattice dimerizatio...

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Published inCrystals Vol. 2; no. 3; pp. 996 - 1016
Main Authors Yoshioka, Hideo, Otsuka, Yuichi, Seo, Hitoshi
Format Journal Article Book Review
LanguageEnglish
Published Basel MDPI AG 19.07.2012
Subjects
bosonization
charge order
extended Hubbard model
metal-insulator transition
molecular conductors
phase transition
quantum Monte Carlo
quasi-one-dimension
renormalization group
symmetry breaking
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Summary:A review is given for recent theoretical studies on phase transitions in quasi-one-dimensional molecular conductors with a quarter-filled band. By lowering temperature, charge transfer salts exhibit a variety of transitions accompanying symmetry breaking, such as charge ordering, lattice dimerization, antiferromagnetic transition, spin-Peierls distortion, and so on. Analyses on microscopic quasi-one-dimensional models provide their systematic understandings, by the complementary use of different analytical and numerical techniques; they can reproduce finite-temperature phase transitions, whose results can be directly compared with experiments and give feedbacks to material design.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst2030996