Derivation of a one-band Hubbard model for CuO planar materials
- 1 October 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 44 (14), 7504-7509
- https://doi.org/10.1103/physrevb.44.7504
Abstract
We have performed numerical studies of multiband Hubbard models for the Cu-O planes of the high- materials. For the range of realistic parameters, all low-energy (≤2 eV) charge and spin excitations are described by the single-band (possibly extended) Hubbard model with U≃W, where W is the bandwidth.
Keywords
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