Resilient quasiparticles in Ruthenates: transport properties within LDA+DMFT method

ORAL

Abstract

Many Rutheniums are strongly correlated metals with Fermi Liquid behavior found only a small temperature scale. Non-Fermi signatures appear in both their resistivity and optical conductivity. We study the transport properties of a set of Ruthenates within first principle methods in combination with dynamical mean field theory and find reasonable agreement with experimental findings. The non-Fermi-liquid features are attributed to the temperature dependence of resilient quasiparticles, which survives above the Fermi liquid temperature scale and exhibits a strong temperature dependence in their effective mass enhancement and scattering rate.

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Authors

  • Xiaoyu Deng

    Rutgers Univ

  • Kristjan Haule

    Rutgers University, Rutgers University, Piscataway, USA, Rutgers, The State University of New Jersey, Rutgers University, Piscataway, NJ, USA, Department of Physics, Rutgers University, Piscataway, New Jersey, USA, Rutgers Univ

  • Gabriel Kotliar

    Rutgers University, Piscataway, NJ, Rutgers University, Rutgers University, Piscataway, NJ, USA, Rutgers Univ