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Photoemission Study of the Electronic Structure of Copper Oxide Superconductors

  • Z.-X. Shen (a1), J. W. Allen (a2), J. J. Yeh (a1), J.-S. Kang (a2) (a3), W. Ellis (a4), W. E. Spicer (a1), I. Lindau (a1), J. Z. Sun (a5), T. H. Geballe (a5), M. B. Maple (a3), Y. D. Dalichaouch (a3) and M. S. Torikachvei (a3)...

Abstract

We report the photoemission spectra from a high quality thin film sample of Y1Ba2Cu3C7-δ at room temperature and bulk samples of Y1Ba2Cu3C7-δ at different temperatures. The experimental data are interpreted within the configuration interaction model of Anderson Hamiltonian. The experimental values for Δ, U and T are determined. We also give the reasons why we think PES data reflect the intrinsic property of the superconductors. Furthermore, we emphasize the importance of the presence of a 3d8-like satellite which signals the strong correlation among 3d electrons.

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1. Shen, Z.-X., Alien, J. W., Yeh, J. J., Kang, J. S., Ellis, W., Spicer, W. E., Lindau, I., Maple, M. B., Dalichaouch, Y. D., Torikachvili, M. S., Sun, J. Z., and Geballe, T. H., to be published in Phys. Rev. B.
2. Yarnoff, J. A., Clarke, D. R., Drube, W., Karlsson, U. O., Taleb-Ibrahm, A., and Himpsel, F. J., Phys. Rev. B36, 3967 (1987).
3. Kurtz, R. C, Stockbauer, R. L., Mueller, D., Shih, A., Toth, L. E., Osofsky, M., and Wolf, S. A., Phys. Rev. B 35, 8818 (1987).
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5. Onellion, M., Chang, Y., Tang, M., Toynt, R., Hellstrom, E. E., Daeumling, M., Seuntjens, T., Hampshire, D., Larbalestier, D. C., Margaritondo, G., Stoffel, N. G., and Tarascon, J. M., to be published in J. Vac. Sci. Technol.

Photoemission Study of the Electronic Structure of Copper Oxide Superconductors

  • Z.-X. Shen (a1), J. W. Allen (a2), J. J. Yeh (a1), J.-S. Kang (a2) (a3), W. Ellis (a4), W. E. Spicer (a1), I. Lindau (a1), J. Z. Sun (a5), T. H. Geballe (a5), M. B. Maple (a3), Y. D. Dalichaouch (a3) and M. S. Torikachvei (a3)...

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