Schedule Nov 19, 2002
Towards a model Hamiltonian for V2O3
George Sawatzky, University of British Columbia
I will present our conclusions concerning an appropriate model Hamiltonian for V2O3. This is based on LDA, LDA+U calculations as well as tight binding fit's to the band structure. We find that the c axis pair hopping is not as important as has been suggested in the past and that other hopping integrals result in large band dispersions. I will also stress the importance of the unoccupied 3d eg orbitals and their very strong covalency with the Oxygen 2p bands in determining the low energy scale physics of V2O3.

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