The band electronic structure of the high-temperature superconducting ceramics La2-xMxCuO4and YBa2Cu3O7-y
- 10 November 1987
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 20 (31) , L853-L860
- https://doi.org/10.1088/0022-3719/20/31/001
Abstract
Atomic-orbital-based calculations have been carried out for the one-electron band structures and densities of states in the tetragonal and orthorhombic phases of stoichiometric La2CuO4, in orthorhombic YBa2Cu3O7, and in tetragonal YBa2Cu3O6. Close similarities in the copper environments lead to very similar one-electron energy-band shapes near the Fermi level. In all four phases the density of states at the Fermi level is low, between 1.1 and 1.6 states/eV/Cu atom, and the bands crossing EF are quasi-two-dimensional or quasi-one-dimensional.Keywords
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