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Crystals 2012, 2(3), 996-1016; doi:10.3390/cryst2030996
Review

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

1,* , 2
 and
3,4
Received: 16 April 2012 / Revised: 3 July 2012 / Accepted: 4 July 2012 / Published: 19 July 2012
(This article belongs to the Special Issue Molecular Conductors)
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Abstract

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.
Keywords: molecular conductors; quasi-one-dimension; phase transition; charge order; metal-insulator transition; symmetry breaking; bosonization; renormalization group; quantum Monte Carlo; extended Hubbard model molecular conductors; quasi-one-dimension; phase transition; charge order; metal-insulator transition; symmetry breaking; bosonization; renormalization group; quantum Monte Carlo; extended Hubbard model
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Yoshioka, H.; Otsuka, Y.; Seo, H. Theoretical Studies on Phase Transitions in Quasi-One-Dimensional Molecular Conductors. Crystals 2012, 2, 996-1016.

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