Based on a comprehensive perusal of experimental results, we construct a microscopic model describing the normal state of layered 4d oxide Sr_2 RuO_4 incorporating relevant quantum chemical features of the material. The high-T anomalies are explained within a Luttinger liquid (LL) picture. Interlayer one-particle hopping drives a dimensional crossover to a correlated Fermi liquid below a scale E^{*} << t_{perp}. Using recently developed chain-dynamical mean field theory, the low value of E^{*}, as well as various puzzling features of the low-T normal state are explained as manifestations of the crossover from the high-T Luttinger liquid state in a consistent way.
@article{arxiv.cond-mat/0208559,
title = {On the Normal State Electronic properties of Layered Sr_2 RuO_4},
author = {M. S. Laad and E. Müller-Hartmann},
journal= {arXiv preprint arXiv:cond-mat/0208559},
year = {2007}
}
Comments
4 pages, no figures. Submitted to Physical Review Letters