Influence of oxygen orbitals on impurity states in superconducting cuprates

POSTER

Abstract

Recent STM studies have shown that the oxygen states play a hitherto unappreciated role in the inhomogeneous electronic structure of the CuO2 plane. To gain some insight into these effects, we solve the Bogoliubov-de Gennes equations numerically for a 3-band Hubbard model with d-wave pair interaction. We consider the one-impurity problem, and discuss the role of the various atomic orbitals in the in the formation of impurity bound states and magnetic moments in the presence of correlations described by the Hubbard U. Finally, we study the interference of many impurities.

*This work was supported by DOE grants DE-FG02-97ER45660, DE-FG02-05ER46236 and DE-FG02-02ER45995 and by the University of Florida High Performance Computing center.

Authors

  • Alexander Kemper

    • University of Florida
    • University of Florida, Gainesville
    • Quantum Theory Project and Department of Physics

  • Hai-Ping Cheng

    • University of Florida
    • Quantum Theory Project and Department of Physics, University of Florida
    • Physics Dept., U. Florida
    • Quantum Theory Project, Department of Physics, University of Florida
    • University of Florida, Gainesville

  • Peter J. Hirschfeld

    • University of Florida
    • Department of Physics, University of Florida, Gainesville, FL 32611
    • Physics Dept., U. Florida
    • Department of Physics, University of Florida