Phonon anomaly by massive Dirac fermions of graphene

Article

关键词: GRAPHITE;    SCATTERING;   

DOI  :  10.1103/PhysRevB.97.155413

来源: SCIE

【 摘 要 】

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 changes the phonon self-energy and explain the mechanism in terms of the pseudospin polarization of massive Dirac fermions. We argue that the mass is detectable using Raman spectroscopy.

【 授权许可】

Free