Electron self-energy in A3C60 (A=K, Rb): effects of t1u plasmons in the GW approximation.

Gunnarsson O.

Max-Planck-Institut für Festkörperforschung, Stuttgart

The electron self-energy of the t1u states in A3C60 (A=K, Rb) is calculated using the so-called GW approximation. The calculation is performed within a model which considers the tlu charge-carrier plasmon at 0.5 eV and takes into account scattering of the electrons within the tlu band. A moderate reduction (35%) of the tlu band width is obtained.

A reprint of this paper can be obtained from cond-mat in Germany or in the US.

Journal of Physics: Condensed Matter, 9 5635-41, 1997.

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