Phys. Rev. Lett. 100, 096402 (2008) [4 pages]Orbital Non-Fermi-Liquid Behavior in Cubic RuthenatesReceived 7 February 2006; published 4 March 2008 We peruse various anomalous physical responses of the cubic (ferromagnetic SrRuO3 and paramagnetic CaRuO3) ruthenates, such as fractional power-law conductivity, anomalous Raman line shapes, and Hall currents. We show how these exciting power-law observations are naturally described within a new, local (orbital) non-Fermi-liquid state arising from strong, multiorbital Coulomb interactions. Introducing a multiorbital, correlated model treated within the dynamical mean-field theory, we also find two distinct relaxation rates for relaxation of transport in complete agreement with experiment. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.096402
DOI:
10.1103/PhysRevLett.100.096402
PACS:
71.27.+a, 71.10.Hf, 72.80.Ga
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