Electron self-energy in A₃C₆₀ (A=K, Rb): Effects of t1u plasmon in GW approximation

Olle Gunnarsson
Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany

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 t1u charge carrier plasmon at 0.5 eV and takes into account scattering of the electrons within the t1u band. A modest reduction (35 %) of the t1u band width is obtained.

J. Phys.: Cond. Mat. 9 , 5635 (1997).

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