Emergent Heavy Fermion Behavior at the Wigner-Mott Transition

Abstract

We study charge ordering driven by Coulomb interactions on triangular lattices relevant to the Wigner-Mott transition in two dimensions. Dynamical mean-field theory reveals the pinball liquid phase, a charge ordered metallic phase containing quasi-localized (pins) coexisting with itinerant (balls) electrons. Based on an effective periodic Anderson model for this phase, we find an antiferromagnetic Kondo coupling between pins and balls and strong quasiparticle renormalization. Non-Fermi liquid behavior can occur in such charge ordered systems due to spin-flip scattering of itinerant electrons off the pins in analogy with heavy fermion compounds.

5 pages, 3 figures

References in corpus (9)

• Quantum Criticality in Heavy Fermion Metals
• Theoretical Aspects of Charge Ordering in Molecular Conductors
• Coulomb Correlations and the Wigner-Mott Transition
• Strong coupling theory of the spinless charges on the triangular lattices: possibility of a new quantum liquid
• Orbital degeneracy removed by charge order in triangular antiferromagnet AgNiO2
• Extended Hubbard model: Charge Ordering and Wigner-Mott transition
• Non-local correlations in metals close to a charge order insulator transition
• Self-doping instability of the Wigner-Mott insulator
• Mott and Wigner-Mott transitions in doped correlated electron systems: effects of superlattice potential and inter-site correlation

Cited by in corpus (18)

• Combined topological and Landau order from strong correlations in Chern bands
• Doping driven metal-insulator transitions and charge orderings in the extended Hubbard model
• Phase diagram of the triangular extended Hubbard model
• Phase diagram of the 1/3-filled extended Hubbard model on the Kagome lattice
• Strongly correlated exciton-polarons in twisted homo-bilayer heterostructures
• Noncollinear and noncoplanar magnetic order in the extended Hubbard model on anisotropic triangular lattice
• Doping a Wigner-Mott insulator: Exotic charge orders in transition-metal dichalcogenide moiré heterobilayers
• Charge-Order on the Triangular Lattice: A Mean-Field Study for the Lattice $S=1/2$ Fermionic Gas
• Pinball liquid phase from Hund's coupling in frustrated transition metal oxides
• Emergent lattices with geometrical frustration in doped extended Hubbard models
• Multiorbital kinetic effects on charge ordering of frustrated electrons on the triangular lattice
• Competing supersolids of Bose-Bose mixtures in a triangular lattice
• Thermal algebraic-decay charge liquid driven by competing short-range Coulomb repulsion
• Finite Temperature Properties of Geometrically Charge Frustrated Systems
• Origin and stability of generalized Wigner crystallinity in triangular moiré systems
• Particle-Hole Asymmetry and Pinball Liquid in a Triangular-Lattice Extended Hubbard Model within Mean-Field Approximation
• Quantum Magnetism in Wannier-Obstructed Mott Insulators
• Paramagnetic phases of strongly correlated ultracold fermions coupled to an optical cavity