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Signature of electronic excitations in the Raman spectrum of graphene

Research output: Contribution to journalJournal article


Article number241404
<mark>Journal publication date</mark>12/2009
<mark>Journal</mark>Physical Review B
Issue number24
Number of pages4
<mark>Original language</mark>English


Inelastic light scattering from Dirac-type electrons in graphene is shown to be dominated by the generation of the interband electronic modes which are odd in terms of time-inversion symmetry and belong to the irreducible representation A(2) of the point group C-6v of the honeycomb crystal. At high magnetic fields, these electron-hole excitations appear as peculiar n(-)-> n(+) inter-Landau-level modes with energies omega(n)=22nhv/lambda(B) and characteristically crossed polarization of in/out photons.

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© 2009 The American Physical Society