Massive Dirac Fermions Signal in Raman Spectrum of Graphene
arXiv:1801.08299 · doi:10.1103/PhysRevB.97.155413
Abstract
Massless Dirac fermions in graphene can acquire a mass through different kinds of sublattice-symmetry-breaking perturbations, and there is a growing need to determine this mass using a conventional method. We describe how the mass caused by a staggered sublattice potential is determined using Raman spectroscopy and explain the mechanism in terms of the pseudospin polarization of massive Dirac fermions.
6 pages, 2 figures
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