Coexistence of periodic modulation of quasiparticle states and superconductivity in Bi2Sr2CaCu2O8+delta.

  title={Coexistence of periodic modulation of quasiparticle states and superconductivity in Bi2Sr2CaCu2O8+delta.},
  author={Chaim B C Howald and Hiroshi Eisaki and Nobuhisa Kaneko and Aharon Kapitulnik},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={100 17},
In this article we show, using scanning tunneling spectroscopy, the existence of static striped density of electronic states in nearly optimally doped Bi2Sr2CaCu2O8+delta in zero field. This modulation is aligned with the Cu-O bonds, with a periodicity of four lattice constants, and exhibits features characteristic of a two-dimensional system of line objects. We further show that the density of states modulation manifests itself as a shift of states from above to below the superconducting gap… CONTINUE READING
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