Details

Autor(en) / Beteiligte

• Adelmann, P.
• Armbruster, J.
• Cummins, T.R.
• Fink, J.
• Golden, M.S.
• Hennrich, F.
• Kappes, M.M.
• Knupfer, M.
• Michel, R.
• Nucker, N.
• Rockenberger, J.
• Romberg, H.A.
• Roth, M.
• Roth, G.
• Scheerer, B.
• Schmid, M.
• Schwei, P.
• Sing, M.

Titel

Electronic structure of undoped and doped fullerenes

Ist Teil von

• International Conference on Science and Technology of Synthetic Metals, 1994, p.191-191

Ort / Verlag

IEEE

Erscheinungsjahr

1994

Quelle

IEEE Xplore

Beschreibungen/Notizen

• Summary form only given. The electronic structure o doped and undoped fullerenes M/sub x/C/sub n/ (M = Li, Na, K, Rb, Cs, Ca; n = 60, 70, 76, 84) has been investigated by electron energy-loss spectroscopy (EELS) in transmission and by high-resolution photoemission spectroscopy (PES). From Cls core-level excitation data the unoccupied /spl pi/* derived density of states has been investigated, and a filling of LUMO upon doping (and of LUMO+1 in Ca/sub x/C/sub 60/) is directly observed. In momentum dependent low-energy EELS data, optically allowed and forbidden /spl pi/ /spl rarr/ /spl pi/* transitions were observed. Comparisons are drawn between the PES spectra of these higher fullerenes, C/sub 60/ and their doped counterparts. Further investigation on the conduction band of K/sub 3/C/sub 60/ are reported in a second contribution.