A Possible Fermi liquid in the lightly doped Kitaev spin liquid

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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• Kitaev materials beyond iridates: order by quantum disorder and Weyl magnons in rare-earth double perovskites
• Destabilization of magnetic order in a dilute Kitaev spin liquid candidate
• Doping a topological quantum spin liquid: slow holes in the Kitaev honeycomb model
• Evidence of pair-density wave in doping Kitaev spin liquid on the honeycomb lattice
• Bilayer Kitaev models: Phase diagrams and novel phases
• Hole propagation in the Kitaev-Heisenberg model: From quasiparticles in quantum Neel states to non-Fermi liquid in the Kitaev phase
• Vacancies in the Kitaev quantum spin liquids on the 3D hyper-honeycomb lattice
• Hydrated lithium intercalation into the Kitaev spin liquid candidate material $\alpha -$RuCl${}_3$
• Coherent hole propagation in an exactly solvable gapless spin liquid
• Compass and Kitaev models -- Theory and Physical Motivations
• Dynamics of fractionalized mean-field theories: consequences for Kitaev materials
• Single-hole spectra of Kitaev spin liquids: from dynamical Nagaoka ferromagnetism to spin-hole fractionalization
• Li doping kagome spin liquid compounds
• Pairing tendencies in the doped Kitaev-Heisenberg model
• Ground State Properties of the Doped Kitaev-Heisenberg Chain: Topological Superconducting and Mott Insulating Phases Driven by Magnetic Frustration
• Novel synthesis method of nonstoichiometric Na2-xIrO3. Crystal structure, transport and magnetic properties