Extended regime of metastable metallic and insulating phases in a two-orbital electronic system
Matteo Vandelli, Josef Kaufmann, Viktor Harkov, A. I. Lichtenstein, Karsten Held, E. A. Stepanov
Abstract
Taking the nonlocal collective electronic fluctuations into account completely changes the state-of-the-art scenario for the metal-insulator transition in a quarter-filled two-orbital Hubbard model. These fluctuations redistribute the spectral weight between the orbitals, which results in an extremely broad coexistence region between the metallic and Mott insulating states.
Topics & Concepts
MetastabilityCondensed matter physicsMott insulatorMerge (version control)Atomic orbitalElectronic structureMott transitionFormalism (music)Density of statesMetal–insulator transitionPhase transitionPhysicsLattice (music)Materials scienceElectronQuantum mechanicsHubbard modelElectrical resistivity and conductivityAcousticsMusicalVisual artsComputer scienceSuperconductivityArtInformation retrievalMagnetic and transport properties of perovskites and related materialsPhysics of Superconductivity and MagnetismAdvanced Condensed Matter Physics