The Energy Spectrum of Single-Hole States in Transition Metal Oxides

• Authors: A. Lehmann-Szweykowska , R. Wojciechowski , G. Gehring
• Languages of publication: EN

Abstracts

EN

The p-d hybridised single-hole states of the transition-metal-oxygen tetrahedron (TMO_{4}) are collectivised due to the direct p-p hopping between oxygens of different clusters. The lowest-lying energy band is always narrow and fully occupied. The first excited band gets occupied as an effect of valence-uncompensated doping, so it can be almost localised. The possible hole excitations to the two higher energy bands, which are wider, may imply the Mott-like hopping form of charge transport in these systems.

Keywords

EN

71.10.Fd; 72.20.-i

Discipline

• 71.10.Fd: Lattice fermion models (Hubbard model, etc.)
• 72.20.-i: Conductivity phenomena in semiconductors and insulators(see also 66.70.-f Nonelectronic thermal conduction and heat-pulse propagation in solids; thermal waves)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 97
• Issue: 3
• Pages: 563-566

Dates

published

2000-03

Contributors

author

A. Lehmann-Szweykowska

• Institute of Physics, A. Mickiewicz Univeresity, Umultowska 85, 61-614 Poznań, Poland

author

R. Wojciechowski

• Institute of Physics, A. Mickiewicz Univeresity, Umultowska 85, 61-614 Poznań, Poland

author

G. Gehring

• Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, U.K.

Identifiers

DOI

10.12693/APhysPolA.97.563