Unusual spectral weight transfer in high temperature Bi-superconductors

ORAL

Abstract

High resolution angle resolved photoemission spectroscopy (ARPES) studies of the electronic structure of single layer (Bi$_{2}$Sr$_{2}$CuO$_{6+\delta })$ and double layer (Bi$_{2}$Sr$_{2}$CaCuO$_{8+\delta })$ Bi-compound are reported. A detailed study of the quasiparticle spectral function as a function of momentum, temperature and doping is presented. Unusual spectral weight transfer is observed in both systems and discussed in terms of a strong interplay between the electron-lattice and electron-electron interaction in these materials.

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Authors

  • Jeff Graf

    • Materials Sciences Division, Lawrence Berkeley National Laboratory, California 94720

  • Gey-Hong Gweon

    • MSD, Lawrence Berkeley National Laboratory, CA 94720; Department of Physics, UC Berkeley, CA 94720

  • Shuyun Zhou

    • Department of Physics, UC Berkeley, CA 94720

  • Eli Rotenberg

    • Advanced Light Source, Lawrence Berkeley National Laboratory, CA 94720

  • Hiroshi Eisaki

    • Electrotechnical Laboratory, Tsukuba Japan

  • Alessandra Lanzara

    • MSD, Lawrence Berkeley National Laboratory, CA 94720; Department of Physics, UC Berkeley, CA 94720