High-energy resolution photoemission study of CsxC60. Comparative study with KxC60

T. Takahashi, T. Morimoto, T. Yokoya

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Comparative high-energy resolution (ΔE ∼ 30 meV) photoemission spectroscopy has been performed for CsxC60 and KxC60 to study the difference and similarity in the electronic structure near the Fermi level (EF) between the superconducting and the non-superconducting alkali-doped C60. It was found that CsxC60 (0≤x≤6) is a semiconductor or an insulator in the whole composition range except for 0<x≤1 where the Cs doped C60 appears to be metallic with a finite density of states at EF. This shows a sharp contrast with the case of KxC60 which exhibits a relatively large density of states at EF in the composition of 0<x<4 with the largest intensity around x = 3.

Original languageEnglish
Pages (from-to)227-232
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume232
Issue number3-4
DOIs
Publication statusPublished - Nov 1 1994
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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