Abstract
Ab initio matrix-block negative-factor-counting calculations including electron correlation effects at the quasi-particle level have been performed on long linear alkane chains. Explicit results are given for C36H74, C72H146 and C600H1202. It was found that the band edges in the photoelectron spectra for the CC and CH regions are already converged for these oligomers. On the other hand, band-shape formation inside the CH-regions is not yet complete for C36H74 from the theoretical point of view.
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