On the Normal State Electronic properties of Layered Sr₂ RuO₄
Laad, M. S. · Müller-Hartmann, E.
Original · EN
Based on a comprehensive perusal of experimental results, we construct a microscopic model describing the normal state of layered 4d oxide Sr₂ RuO₄ 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* << tperp. 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.
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