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Updated: Jun 25, 2026

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
Quasiparticles at the Mott transition in V2O3: wave vector dependence and surface attenuation
F Rodolakis1, B Mansart, E Papalazarou
1Laboratoire de Physique des Solides, CNRS-UMR 8502, Université Paris-Sud, F-91405 Orsay, France.
Angle resolved photoemission reveals wave vector dependence in V2O3 quasiparticle peaks. This length scale for electronic excitations increases near the Mott transition, agreeing with theoretical predictions.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Surface Science
Background:
- Vanadium sesquioxide (V2O3) is a key material for studying Mott transitions.
- Understanding correlated materials requires detailed knowledge of electronic excitations.
Purpose of the Study:
- To investigate the wave vector dependence of quasiparticle peaks in V2O3.
- To characterize the surface electronic excitation length scale near the Mott transition.
Main Methods:
- Angle Resolved Photoemission Spectroscopy (ARPES).
- Probing electronic states at varying depths within the material.
Main Results:
- Observed a distinct wave vector dependence in quasiparticle peak intensity, particularly along the Gamma-Z direction.
- Determined a characteristic length scale for coherent electronic excitation attenuation at the surface.
- Found this length scale increases as the Mott transition is approached.
Conclusions:
- The surface electronic excitation length scale in V2O3 is significant and sensitive to proximity to the Mott transition.
- Results align with theoretical models describing quasiparticle behavior at surfaces in correlated systems.
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