Contribution of the buffer layer to the Raman spectrum of epitaxial graphene on SiC(0001)

F. Fromm, M. H. Oliveira, A. Molina-Sánchez +5

We report a Raman study of the so-called buffer layer with $(6\sqrt{3}\times 6\sqrt{3})R30^{\circ }$ periodicity which forms the intrinsic interface structure between epitaxial graphene…