Anomalous Quasiparticle Lifetime in Graphite: Band Structure Effects
Anomalous Quasiparticle Lifetime in Graphite: Band Structure Effects
We report ab initio calculations of quasiparticle lifetimes in graphite, as determined from the imaginary part of the self-energy operator within the GW approximation. The inverse lifetime in the energy range from 0.5 to 3.5 eV above the Fermi level presents significant deviations from the quadratic behavior naively expected from …