Imaging Quasiparticle Interference in Bi2Sr2CaCu2O8+δ

  title={Imaging Quasiparticle Interference in Bi2Sr2CaCu2O8+$\delta$},
  author={Jennifer E. Hoffman and Kyle McElroy and D.-H. Lee and Kristine Lang and Hiroshi Eisaki and Shin-ichi Uchida and J. C. S{\'e}amus Davis},
  pages={1148 - 1151}
Scanning tunneling spectroscopy of the high-T c superconductor Bi2Sr2CaCu2O8+δreveals weak, incommensurate, spatial modulations in the tunneling conductance. Images of these energy-dependent modulations are Fourier analyzed to yield the dispersion of their wavevectors. Comparison of the dispersions with photoemission spectroscopy data indicates that quasiparticle interference, due to elastic scattering between characteristic regions of momentum-space, provides a consistent explanation for the… 
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