Quasiparticle lifetime in graphite studied by ultrahigh-resolution ARPES

K. Sugawara, T. Sato, S. Souma, T. Takahashi, H. Suematsu

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We have performed ultrahigh-resolution angle-resolved photoemission spectroscopy (ARPES) to elucidate the nature of quasiparticle dynamics in graphite. We found fairly sharp quasiparticle peak of π band around K(H) point in the vicinity of the Fermi level, together with the strong mass renormalization of the band (kink). The imaginary part of electron self-energy (ImΣ) shows a sudden drop below 0.18 eV, indicative of a strong electron-phonon coupling. The linear energy dependence of ImΣ at higher binding energies provides an evidence for the deviation from the conventional Fermi liquid theory.

Original languageEnglish
Pages (from-to)2996-2999
Number of pages4
JournalJournal of Physics and Chemistry of Solids
Volume69
Issue number12
DOIs
Publication statusPublished - 2008 Dec 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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