On the Origin of the Non-Fermi Liquid Behavior of SrRuO_{3}

Details On the Origin of the Non-Fermi Liquid Behavior of SrRuO_{3} On the Origin of the Non-Fermi Liquid Behavior of SrRuO_{3}

2001-04-27

arxiv.org/abs/cond-mat/0104543v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages. Submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.87.246402

Motivated by the unusual features observed in the transport properties of the ferromagnetic "bad metal" $SrRuO_{3}$, we construct a model incorporating essential features of the realistic structure of this nearly cubic material. In particular, we show how the $t_{2g}$orbital {\it orientation} in the perfectly cubic structure determines the peculiar structure of the hybridization matrix, and demonstrate how the local non-Fermi liquid features arise when interactions are switched on. we discuss the effect of the slight deviation from the cubic structure (at low-$T$) qualitatively. The model provides a consistent explanation of the features observed recently in the optical response of $SrRuO_{3}$.

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