Unconventional Quasiparticle Lifetime in Graphite
Unconventional Quasiparticle Lifetime in Graphite
The influence of electron-electron scattering on quasiparticle lifetimes in graphite is calculated. In the limit when the Fermi surface is reduced to isolated points in the Brillouin Zone, the suppression of screening leads to non Fermi liquid behavior. The inverse lifetime increases linearly with energy, in agreement with recent experiments. …