ACAD SINICA,INST HIGH ENERGY PHYS,SYNCHROTRON RADIAT LAB,BEIJING 100039,PEOPLES R CHINA
; BEIJING UNIV,DEPT PHYS,BEIJING 100871,PEOPLES R CHINA
Electron band structure of C-60 single crystal las been investigated using synchrotron radiation. On the cleaved (111) surface of the C-60 single crystal the angle-resolved ultraviolet photoelectron spectra were measured at normal emission with varying photon energy from 12.7 to 28.2 eV. The valence band dispersions in L-Gamma-L direction were successfully observed. The dispersions are 0.94 and 0.17 eV for the highest occupied molecular orbitals (HOMO) and HOMO-1 derived band respectively.