Ising transition in a one-dimensional quarter-filled electron system with dimerization

Details Ising transition in a one-dimensional quarter-filled electron system with dimerization Ising transition in a one-dimensional quarter-filled electron system with dimerization

2001-10-16

arxiv.org/abs/cond-mat/0110315v1

J. Phys. Chem. Solids 63 (2002) 1459

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 1 figure, uses elsart.cls, Proc. Int. Symp. ISSP-Kashiwa 2001, submitted to J. Phys. Chem. Solids

Scientific paper

10.1016/S0022-3697(02)00014-8

We examine critical properties of the quarter-filled one-dimensional Hubbard model with dimerization and with the onsite and nearest-neighbor Coulomb repulsion U and V. By utilizing the bosonization method, it is shown that the system exhibits an Ising quantum phase transition from the Mott insulating state to the charge-ordered insulating state. It is also shown that the dielectric permittivity exhibits a strong enhancement as decreasing temperature with power-law dependence at the Ising critical point.

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