Doped Mott Insulator as the Origin of Heavy-Fermion Behavior inLiV2O4

2007/01/22 by R. Arita, Ryotaro Arita, Karsten Held +4 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Computer science #Condensed matter physics #Doping #Magnetic and transport properties of perovskites and related materials #Mott insulator #Physics #Physics of Superconductivity and Magnetism #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.98.166402

published as Phys. Rev. Lett. 98, 166402 (2007) · 4 pages, 5 figures

arxiv created 2007/01/22 · openalex publication_date 2007/04/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We investigate the electronic structure of LiV2O4, for which heavy-fermion behavior has been observed in various experiments, by the combination of the local density approximation and dynamical mean field theory. To obtain results at zero temperature, we employ the projective quantum Monte Carlo method as an impurity solver. Our results show that the strongly correlated a 1g band is a lightly doped Mott insulator which, at low temperatures, shows a sharp (heavy) quasiparticle peak just above the Fermi level, which is consistent with recent photoemission experiments by Shimoyamada et al. [Phys. Rev. Lett. 96, 026403 (2006)10.1103/PhysRevLett.96.026403].

Citations

• Hubbard model at infinite dimensions: Thermodynamic and transport properties
• Orbital state and magnetic properties ofLiV2O4
• Projective Quantum Monte Carlo Method for the Anderson Impurity Model and its Application to Dynamical Mean Field Theory
• Fate of Quasiparticle at Mott Transition and Interplay with Lifshitz Transition Studied by Correlator Projection Method
• Orbital-selective Mott-Hubbard transition in the two-band Hubbard model
• Formation of a heavy quasiparticle state in the two-band Hubbard model

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