Renormalization of spectral line shape and dispersion below Tc in Bi2Sr2CaCu2O8+δ

A. Kaminski, M. Randeria, J. C. Campuzano, M. R. Norman, H. Fretwell, J. Mesot, T. Sato, T. Takahashi, K. Kadowaki

Research output: Contribution to journalArticlepeer-review

307 Citations (Scopus)

Abstract

Angle-resolved photoemission data in the superconducting state of Bi2Sr2CaCu2O8+δ show a kink in the dispersion along the zone diagonal, which is related via a Kramers-Krönig analysis to a drop in the low energy scattering rate. As one moves towards (π, 0), this kink evolves into a spectral dip. The occurrence of these anomalies in the dispersion and line shape throughout the zone indicates the presence of a new energy scale in the superconducting state.

Original languageEnglish
Pages (from-to)1070-1073
Number of pages4
JournalPhysical review letters
Volume86
Issue number6
DOIs
Publication statusPublished - 2001 Feb 5

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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