Zeitschrift für Physik B Condensed Matter

, Volume 81, Issue 2, pp 165–173 | Cite as

On the hole spectral function of the Emery model

  • K. W. Becker
  • W. Brenig
  • P. Fulde


We discuss the spectral function of a single O hole generated in a two-dimensional CuO2-lattice at half-filling. The latter constitutes the most important structural element of high-T c superconducting materials. The system is described by the so-called extended Hubbard or Emery model. Strong electronic correlations which are incorporated in the model prevent the usual evaluation of Green functions based on Wick's theorem and using diagram techniques. For that reason we apply a new cumulant approach to dynamical correlation functions introduced recently. As a result we find that the local one-O hole excitation spectrum has two structured absorption regions around the bare O energyɛ p and aroundɛ p +Δ due to charge fluctuations of Cu holes. Here Δ is the bare charge transfer gap. The width of the absorption regime aroundɛ p is of the order of several timest pd 2 /Δ, wheret pd is the hopping integral between Cu and O holes.


Green Function Excitation Spectrum Spectral Function Usual Evaluation Dynamical Correlation 
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  1. 1.
    Anderson, P.W.: Science235, 1196 (1987); and in: Proceedings of the International School of Physics “Enrico Fermi”, July 1987. Frontiers and borderlines in many particle physics. Amsterdam: North Holland 1989Google Scholar
  2. 2.
    Eder, R., Becker, K.W.: Z. Phys. B—Condensed Matter78, 219 (1990)Google Scholar
  3. 3.
    Kane, C.L., Lee, P.A., Read, N.: Phys. Rev. B39, 6880 (1989)Google Scholar
  4. 4.
    Maekawa, S., Inoue, J., Tohyama, T.: In: Strong correlation and superconductivity. Berlin, Heidelberg, New York: Springer 1989Google Scholar
  5. 5.
    Stephan, W., v. Sczcepanski, K., Horsch, P., Ziegler, M.: Phys. Rev. B39, 6880 (1989)Google Scholar
  6. 6.
    Trugman, S.A.: Phys. Rev. B37, 1597 (1988)Google Scholar
  7. 7.
    Becker, K.W., Brenig, W.: Z. Phys. B—Condensed Matter79, 195 (1990)Google Scholar
  8. 8.
    v. Sczepanski, K., Horsch, P., Stephan, W., Ziegler, M.: Phys. Rev. B41, 2017 (1990)Google Scholar
  9. 9.
    Dagotto, E., Joynt, R., Moreo, A., Bacci, S., Gagliano, E.: Phys. Rev. B41 2585 (1990)Google Scholar
  10. 10.
    Emery, V.J.: Phys. Rev. Lett58, 2794 (1987)Google Scholar
  11. 11.
    Nücker, N., Fink, J., Fuggle, J.C., Durham, P.J., Temmerman, W.M.: Phys. Rev. B37, 5158 (1988)Google Scholar
  12. 12.
    Singh, R.R.P., Fleury, P.A., Lyons, K.B., Sulewski, P.E.: Phys. Rev. Lett.62, 2736 (1989)Google Scholar
  13. 13.
    Hybertsen, M.S., Schlüter, M., Christensen, N.E.: Phys. Rev. B39, 9028 (1989); Stechel, E.B., Jennison, D.R.: Phys. Rev. B40, 6919 (1989)Google Scholar
  14. 14.
    Becker, K.W., Fulde, P.: Z. Phys. B—Condensed Matter72, 423 (1988)Google Scholar
  15. 15.
    Shirane, G., Endoh, Y., Birgeneau, R.J., Kastner, M.A., Hidaka, Y., Oda, M., Suzuki, M., Murakami T.: Phys. Rev. Lett.59, 1613 (1987)Google Scholar
  16. 16.
    Kubo, R.: J. Phys. Soc. Jpn.17, 1100 (1962)Google Scholar
  17. 17.
    Mori, H.: Progr. Theor. Phys.34, 423 (1965)Google Scholar
  18. 18.
    Zwanzig, R.: In: Lectures in Theoretical Physics. Vol. 3. New York: Interscience 1961Google Scholar
  19. 19.
    Zang, F.C., Rice, T.M.: Phys. Rev. B37, 3759 (1988)Google Scholar
  20. 20.
    Maekawa, S., Matsuura, T., Isawa, Y., Ebisawa, H.: Physica C152, 133 (1988)Google Scholar
  21. 21.
    Eskes, H., Sawatsky, A.: Phys. Rev. Lett.61, 1415 (1988)Google Scholar
  22. 22.
    Andrei, N., Coleman, P.: Phys. Rev. Lett.62, 595 (1989)Google Scholar
  23. 23.
    Horsch, P., Stephan, W.H., v. Szczepanski, K., Ziegler, M., von der Linden, W. Physica C162–164, 783 (1989)Google Scholar
  24. 24.
    Royama, T., Tachiki, M.: Physica C162–164, 1509 (1989)Google Scholar

Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • K. W. Becker
    • 1
  • W. Brenig
    • 1
  • P. Fulde
    • 1
  1. 1.Max-Planck-Institut für FestkörperforschungStuttgart 80Germany

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