Phonon self-energy corrections to nonzero wave-vector phonon modes in single-layer graphene.

(Dated: December 21, 2013.)Phonon self-energy corrections have mostly been studied theoretically and experimentally forphonon modes with zone-center (q = 0) wave-vectors. Here, gate-modulated Raman scatteringis used to study phonons of a single layer of graphene (1LG) in the frequency range from 2350to 2750cm