Electron-phonon coupling induced pseudogap and the superconducting transition in (formula presented)

H. Uwe, A. Chainani, Takayoshi Yokoya, S. Shin, T. Kiss, T. Nishio

Research output: Contribution to journalArticle

Abstract

We study the single-particle density of states (DOS) across the superconducting transition (formula presented) in single-crystal (formula presented) using ultrahigh resolution angle-integrated photoemission spectroscopy. The superconducting gap opens with a pileup in the DOS, (formula presented) and (formula presented) In addition, we observe a pseudogap below and above (formula presented) occurring as a suppression in intensity over an energy scale up to the breathing mode phonon (∼70 meV). The results indicate electron-phonon coupling induces a pseudogap in (formula presented)

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number18
DOIs
Publication statusPublished - Jan 1 2001
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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