Filling of the Mott-Hubbard gap in the high temperature photoemission spectrum of (V_0.972Cr_0.028)_2O_3

Abstract

Photoemission spectra of the paramagnetic insulating (PI) phase of (V_0.972Cr_0.028)_2O_3, taken in ultra high vacuum up to the unusually high temperature (T) of 800 K, reveal a property unique to the Mott-Hubbard (MH) insulator and not observed previously. With increasing T the MH gap is filled by spectral weight transfer, in qualitative agreement with high-T theoretical calculations combining dynamical mean field theory and band theory in the local density approximation.

arXiv comment4 pages, 4 figures

References in corpus (6)

• Universality and Critical Behavior at the Mott transition
• Finite temperature numerical renormalization group study of the Mott-transition
• Mott-Hubbard Metal-Insulator Transition in Paramagnetic V_2O_3: a LDA+DMFT(QMC) Study
• Landau Theory of the Finite Temperature Mott Transition
• Prominent quasi-particle peak in the photoemission spectrum of the metallic phase of V_2O_3
• Absence of hysteresis at the Mott-Hubbard metal-insulator transition in infinite dimensions

Cited by in corpus (20)

• Electronic Structure Calculations with Dynamical Mean-Field Theory: A Spectral Density Functional Approach
• Enhanced Crystal Field Splitting and Orbital Selective Coherence by Strong Correlations in V_2O_3
• Momentum-resolved spectral functions of SrVO${}_3$ calculated by LDA+DMFT
• Static vs. dynamical mean field theory of Mott antiferromagnets
• Quasiparticle evolution and pseudogap formation in V2O3: An infrared spectroscopy study
• Orbital selective insulator-metal transition in V2O3 under external pressure
• Ultrafast evolution and transient phases of the prototype out-of-equilibrium Mott-Hubbard material V2O3
• Surface dead layer for quasiparticles near a Mott transition
• The Kondo Resonance in Electron Spectroscopy
• Photoemission study of (V${}_{1-x}$M${}_x$)${}_2$O${}_3$ (M=Cr, Ti)
• Quantum Boltzmann equation for strongly correlated systems: comparison to dynamical mean field theory
• Correlation effects on the electronic structure of TiOCl: a NMTO+DMFT study
• Evolution of the electronic structure of a Mott system across its phase diagram: an X-ray absorption spectroscopy study of (V(1-x)Crx)2O3
• Strongly correlated metal interfaces in the Gutzwiller approximation
• Dynamical Mean-Field Theory and Its Applications to Real Materials
• Dynamical Mean-Field Theory
• Enhancement of impact ionization in Hubbard clusters by disorder and next-nearest-neighbor hopping
• Comparing scattering rates from Boltzmann and dynamical mean-field theory
• Two Aspects of the Mott-Hubbard Transition in Cr-doped V_2O_3
• Role of surface termination in the metal-insulator transition of V${}_2$O${}_3$(0001) ultrathin films