Polarization Dependence of Optical Transitions in Graphene Nanoribbons

preprint2011arXivOpen access

Abstract

The universality of kk-dependent electron-photon and electron-phonon matrix elements is discussed for graphene nanoribbons and carbon nanotubes. An electron undergoes a change in wavevector in the direction of broken translational symmetry, depending on the light polarization direction. We suggest that this phenomenon originates from a microscopic feature of chirality.

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