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arXiv · 1112.4806

A Possible Fermi liquid in the lightly doped Kitaev spin liquid

Jia-Wei Mei
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Abstract

In this paper, we study the lightly doped Kitaev spin liquid (DKSL) and find it to be a Fermi liquid state. The DKSL has a closed Fermi surface around the center of the Brillouin zone with the quantized volume determined by the Luttinger's theorem. It has well-defined quasiparticles near the Fermi surface and can be detected in the angle-resolved photoemission spectroscopy. The DKSL has the topological Kitaev spin liquid (KSL) as its neutral background. It violates the Wiedemann-Franz law and has a large Wilson ration. These results has the potential experimental test in the iridates upon doping.

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Jia-Wei Mei. 2011-12-20. A Possible Fermi liquid in the lightly doped Kitaev spin liquid. https://doi.org/10.1103/physrevlett.108.227207

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