Orientation-dependent C60 electronic structures revealed by photoemission

Abstract

We observe, with angle-resolved photoemission, a dramatic change in the electronic structure of two C60 monolayers, deposited respectively on Ag (111) and (100) substrates, and similarly doped with potassium to half-filling of the C60 lowest unoccupied molecular orbital. The Fermi surface symmetry, the bandwidth, and the curvature of the dispersion at Gamma point are different. Orientations of the C60 molecules on the two substrates are known to be the main structural difference between the two monolayers, and we present new band-structure calculations for some of these orientations. We conclude that orientations play a key role in the electronic structure of fullerides.

4 pages, 4 figures

References in corpus (1)

• Superconductivity in Fullerides

Cited by in corpus (5)

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• Novel Orientational Ordering and Reentrant Metallicity in KxC60 Monolayers for 3 <= x <= 5
• On the relationship between charge ordering and the Fermi arcs observed in underdoped high Tc superconductors
• Influence of local fullerene orientation on the electronic properties of A3C60 compounds
• NMR investigation of the pressure induced Mott transition to superconductivity in Cs3C60 isomeric compounds