Probing the Electronic Structure of Bilayer Graphene by Raman Scattering

Details Probing the Electronic Structure of Bilayer Graphene by Raman Scattering Probing the Electronic Structure of Bilayer Graphene by Raman Scattering

2007-08-09

arxiv.org/abs/0708.1345v1

Phys. Rev. B 76, 201401(R) (2007)

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.76.201401

The electronic structure of bilayer graphene is investigated from a resonant Raman study using different laser excitation energies. The values of the parameters of the Slonczewski-Weiss-McClure model for graphite are measured experimentally and some of them differ significantly from those reported previously for graphite, specially that associated with the difference of the effective mass of electrons and holes. The splitting of the two TO phonon branches in bilayer graphene is also obtained from the experimental data. Our results have implications for bilayer graphene electronic devices.

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