Author/Authors :
Brühwiler، نويسنده , , P.A. and Maxwell، نويسنده , , A.J. and Baltzer، نويسنده , , P. and Andersson، نويسنده , , S. and Arvanitis، نويسنده , , Margit D. and Karlsson، نويسنده , , L. and Mهrtensson، نويسنده , , N.، نويسنده ,
Abstract :
We present photoelectron spectra for the highest occupied molecular orbital (HOMO) of C60 in the gas phase and a two-dimensional (2D) condensed layer. For low temperatures the similarity in the spectra is striking and places a strict upper limit of 0.07 eV on the HOMO electronic bandwidth for the 2D solid, which is a fraction of the theoretically predicted value. This is shown to be consistent with expectations of a polaronic model for the bands and suggests the need fora reassessment of the band dispersions in 3D C60.
