Anomalous dispersion in the autocorrelation of angle-resolved photoemission spectra of high-temperature Bi2 Sr2 Ca Cu2 O8+δ superconductors

U. Chatterjee, M. Shi, A. Kaminski, A. Kanigel, H. M. Fretwell, K. Terashima, T. Takahashi, S. Rosenkranz, Z. Z. Li, H. Raffy, A. Santander-Syro, K. Kadowaki, M. Randeria, M. R. Norman, J. C. Campuzano

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Abstract

We find that peaks in the autocorrelation of angle-resolved photoemission spectroscopy data of Bi2 Sr2 Ca Cu2 O8+δ in the superconducting state show dispersive behavior for binding energies smaller than the maximum superconducting energy gap. For higher energies, though, a striking anomalous dispersion is observed that is a consequence of the interaction of the electrons with collective excitations. In contrast, in the pseudogap phase, we only observe dispersionless behavior for the autocorrelation peaks. The implications of our findings in regard to Fourier transformed scanning tunneling spectroscopy data are discussed.

Original languageEnglish
Article number012504
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number1
DOIs
Publication statusPublished - Jul 23 2007

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Chatterjee, U., Shi, M., Kaminski, A., Kanigel, A., Fretwell, H. M., Terashima, K., Takahashi, T., Rosenkranz, S., Li, Z. Z., Raffy, H., Santander-Syro, A., Kadowaki, K., Randeria, M., Norman, M. R., & Campuzano, J. C. (2007). Anomalous dispersion in the autocorrelation of angle-resolved photoemission spectra of high-temperature Bi2 Sr2 Ca Cu2 O8+δ superconductors. Physical Review B - Condensed Matter and Materials Physics, 76(1), [012504]. https://doi.org/10.1103/PhysRevB.76.012504