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A Tight-Binding Hamiltonian for the High-Temperature Superconductor YBa2Cu3O7

  • M.J. DeWeert (a1), D.A. Papaconstantopoulos (a1) and W.E. Pickett (a1)

Abstract

We present a highly accurate tight-binding parametrization of the LAPW band structure of the high-temperature superconductor YBa2Cu3O7, discuss the methodology used in obtaining this fit, and its potential application to a Tight-Binding Coherent-Potential Approximation (TB-CPA) calculation of the effects of oxygen vacancies on the electronic structure.

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1. Pickett, W.E., Krakauer, H., Papaconstantopoulos, D.A., and Boyer, L.L., Phys. Rev. B 35 7252 (1987).
2. Krakauer, H. and Pickett, W.E., in Novel Superconductivity. Proceedings of the First International Conference on Novel Mechanisms of Superconductivity ed. by Kresin, V.Z. and Wolf, S.A., New York, Plenum Press (1987).
3. Papaconstantopoulos, D.A., Pickett, W.E. and DeWeert, M.J., Phys. Rev. Lett. 61, 211 (1988).
4. Newns, D.M., Pattnaik, P., Rasoult, M., and Papaconstantopoulos, D.A., Phys. Rev. B 38, 7033 (1988).
5. Slater, J.C. and Koster, G.F., Phys. Rev. 94 1498 (1954).
6. DeWeert, M.J., Papaconstantopoulos, D.A., and Pickett, W.E., submitted for publication.
7. Krakauer, H., Pickett, W.E. and Cohen, R.E., J. Supercon. 1, 111 (1988).
8. Faulkner, J.S., Prog. Mat. Sci. 27, Nos. 1 and 2, page 1 (1987).

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A Tight-Binding Hamiltonian for the High-Temperature Superconductor YBa2Cu3O7

  • M.J. DeWeert (a1), D.A. Papaconstantopoulos (a1) and W.E. Pickett (a1)

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