Optical properties of V2O3 in its whole phase diagram

Abstract

Vanadium sesquioxide V2O3 is considered a textbook example of Mott-Hubbard physics. In this paper we present an extended optical study of its whole temperature/doping phase diagram as obtained by doping the pure material with M=Cr or Ti atoms (V1-xMx)2O3. We reveal that its thermodynamically stable metallic and insulating phases, although macroscopically equivalent, show very different low-energy electrodynamics. The Cr and Ti doping drastically change both the antiferromagnetic gap and the paramagnetic metallic properties. A slight chromium content induces a mesoscopic electronic phase separation, while the pure compound is characterized by short-lived quasiparticles at high temperature. This study thus provides a new comprehensive scenario of the Mott-Hubbard physics in the prototype compound V2O3.

References in corpus (28)

• Mott transition in VO2 revealed by infrared spectroscopy and nano-imaging
• Electrodynamics of Correlated Electron Materials
• Electronic correlations in the iron pnictides
• Universality and Critical Behavior at the Mott transition
• Optical Conductivity in Mott-Hubbard Systems
• Mott-Hubbard Metal-Insulator Transition in Paramagnetic V_2O_3: a LDA+DMFT(QMC) Study
• Evidence of a pressure-induced metallization process in monoclinic VO${}_2$
• A Microscopic View on the Mott transition in Chromium-doped V2O3
• Prominent quasi-particle peak in the photoemission spectrum of the metallic phase of V_2O_3
• Enhanced Crystal Field Splitting and Orbital Selective Coherence by Strong Correlations in V_2O_3
• The vanadium Magneli phases VnO(2n-1)
• Quasiparticle evolution and pseudogap formation in V2O3: An infrared spectroscopy study
• Inequivalent routes across the Mott transition in V2O3 explored by X-ray absorption
• Approaching finite-temperature phase diagrams of strongly correlated materials: a case study for V2O3
• Temperature dependence of the optical spectral weight in the cuprates: Role of electron correlations
• A Novel High-Pressure Monoclinic Metallic Phase of V2O3
• Frequency-dependent Thermal Response of the Charge System and Restricted Sum Rules in La(2-x)Sr(x)CuO(4)
• Photoemission study of (V${}_{1-x}$M${}_x$)${}_2$O${}_3$ (M=Cr, Ti)
• Shining light on transition metal oxides: unveiling the hidden Fermi Liquid
• Electronic correlations in iron-pnictide superconductors and beyond; what can we learn from optics
• Electrodynamics near the Metal-to-Insulator Transition in V3O5
• Multi-orbital Effects in Optical Properties of Vanadium Sesquioxide
• Valence band electronic structure of V2O3: identification of V and O bands
• How chromium doping affects the correlated electronic structure of V2O3
• High-temperature optical spectral weight and Fermi liquid renormalization in Bi-based cuprates
• Optical conductivity of V4O7 across its metal-insulator transition
• An extended infrared study of the (p,T) phase diagram of the p-doped Cu-O plane
• Electrodynamics of BaFe2As2 from infrared measurements under pressure

Cited by in corpus (8)

• Generic optical excitations of correlated systems: $\pi$-tons
• Room temperature Mott metal-insulator transition in V2O3 compounds induced via strain-engineering
• Electronic correlation assisted ferroelectric metallic state in LiOsO${}_3$
• Imaging the itinerant-to-localized transmutation of electrons across the metal-to-insulator transition in V${}_2$O${}_3$
• Linear behavior of the optical conductivity and incoherent charge transport in BaCoS2
• Electrodynamic properties of an artificial heterostructured superconducting cuprate
• Lattice contraction induced by resistive switching in chromium-doped V2O3: a hallmark of Mott physics
• Confinement-Induced Isosymmetric Metal-Insulator Transition in Ultrathin Epitaxial V2O3 Films