Correlated metallic state of vanadium dioxide

Abstract

The metal-insulator transition and unconventional metallic transport in vanadium dioxide (VO${}_2$) are investigated with a combination of spectroscopic ellipsometry and reflectance measurements. The data indicates that electronic correlations, not electron-phonon interactions, govern charge dynamics in the metallic state of VO${}_2$. This study focuses on the frequency and temperature dependence of the conductivity in the regime of extremely short mean free path violating the Ioffe-Regel-Mott limit of metallic transport. The standard quasiparticle picture of charge conduction is found to be untenable in metallic VO${}_2$.

5 pages, 3 figures

References in corpus (2)

• Orbital-assisted metal-insulator transition in VO${}_2$
• Ellipsometric study of the Electronic Structure of GaMnAs and LT-GaAs

Cited by in corpus (11)

• Mott transition in VO2 revealed by infrared spectroscopy and nano-imaging
• Cluster Dynamical Mean Field Theory of the Mott Transition
• Electrodynamics of the vanadium oxides VO2 and V2O3
• Infrared spectroscopy and nano-imaging of the insulator-to-metal transition in vanadium dioxide
• Optical properties of correlated materials -- Generalized Peierls approach and its application to VO2
• Effective band-structure in the insulating phase versus strong dynamical correlations in metallic VO2
• Electrostatic modification of infrared response in gated structures based on VO2
• Charge dynamics in thermally and doping induced insulator-metal transitions of (Ti1-xVx)2O3
• Electrodynamics near the Metal-to-Insulator Transition in V3O5
• Materials Design using Correlated Oxides: Optical Properties of Vanadium Dioxide
• Optical Properties of Correlated Materials -- or Why Intelligent Windows may look Dirty