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 language | English |
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Pages (from-to) | 227-232 |
Number of pages | 6 |
Journal | Physica C: Superconductivity and its applications |
Volume | 232 |
Issue number | 3-4 |
DOIs | |
Publication status | Published - 1994 Nov 1 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering