Band structure of V₂O₃, and Ti₂O₃

1 October 1975

journal article
research article
Published by Taylor & Francis in Philosophical Magazine

Vol. 32 (4) , 763-785
https://doi.org/10.1080/14786437508221619

Abstract

A previous calculation of the band structure of trigonal V₂O₃ and Ti₂O₃ by Nebenzahl and Weger is improved, taking a more rigorous treatment and including the effect of covalency. The agreement obtained with experimental results is good. It is found that the width of the 3d band is about 9 eV for V₂O₃ and 11 eV for Ti₂O₃; this band is composed of a wide eσ and a narrow t_2g sub-band. The t_2g sub-band is the lower; its width is about 3 eV for V₂O₃ and 4 eV for Ti₂O₃, and the Fermi level lies within it. The density of states at the Fermi level is high for V₂O₃, and low for Ti₂O₃. It is shown that the inclusion of electron-electron interactions can bring about a metal-to-insulator transition in Ti₂O₃ in terms of a band-crossing model.

Keywords

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Band structure of V2O3, and Ti2O3

Abstract

Keywords

Band structure of V₂O₃, and Ti₂O₃