Coexistence of sharp quasiparticle dispersions and disorder features in graphite
Coexistence of sharp quasiparticle dispersions and disorder features in graphite
Angle resolved photoelectron spectroscopy (ARPES) on azimuthally disordered graphite demonstrates that sharp quasiparticle dispersions along the radial direction can coexist with a complete lack of dispersion along the azimuthal direction. This paradoxical coexistence can be explained in terms of van Hove singularities in the angular density of states. In addition, …