PMID: 19113572Dec 31, 2008Paper

Reversible phase transformation and doubly charged anions at the surface of simple cubic RbC60

Physical Review Letters
Roberto MacovezP Rudolf

Abstract

The simple cubic phase of a RbC60 thin film has been studied using photoelectron spectroscopy. The simple cubic-to-dimer transition is found to be reversible at the film surface. A sharp Fermi edge is observed and a lower limit of 0.5 eV is found for the surface Hubbard U, pointing to a strongly correlated metallic character of thin-film simple cubic RbC60. A molecular charge state is identified in the valence band and core-level photoemission spectra which arises from C60(2-) anions and contributes to the spectral intensity at the Fermi level.

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Citations

May 2, 2016·The Journal of Chemical Physics·P TripathiR Macovez

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