1012.3544 (K. Yoshimi et al.)

Coulomb Frustrated Phase Separation in Quasi-Two-Dimensional Organic
Conductors on the Verge of Charge Ordering    [PDF]

K. Yoshimi, H. Maebashi

On the basis of an analysis of a 3/4-filled two-dimensional (2D) extended Hubbard model under the fluctuation-exchange approximation, we find Coulomb frustrated phase separation (PS) in a region of nonzero temperature, where the quantum critical phenomenon of charge ordering (CO) dominates. In quasi-2D organic conductors on the verge of CO, this frustrated PS provides a mechanism for generating spatial inhomogeneity, which is characterized by an extremely slow relaxation and an intermediate length scale.

View original: http://arxiv.org/abs/1012.3544