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

Crystals

Hideo Yoshioka²  Yuichi Otsuka¹ 

[1]Advanced Institute for Computational Science, RIKEN, Kobe, Hyogo 650-0047, Japan

[2]

[3]Department of Physics, Nara Women’s University, Nara 630-8506, Japan

关键词: molecular conductors;    quasi-one-dimension;    phase transition;    charge order;    metal-insulator transition;    symmetry breaking;    bosonization;    renormalization group;    quantum Monte Carlo;    extended Hubbard model;   

DOI  :  10.3390/cryst2030996

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.