Dresden 2011 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 51: Graphene III
O 51.4: Vortrag
Mittwoch, 16. März 2011, 15:45–16:00, WIL B321
Polarized Raman scattering of graphene nanoribbons — •Nils Scheuschner1, Bernat Terrés2, Christoph Stampfer2, and Janina Maultzsch1 — 1Institut für Festkörperphysik, TU Berlin, Germany — 2JARA-FIT, Institute of Bio and Nanosystems, Forschungszentrum Jülich and II. Institute of Physics, RWTH Aachen University, Germany
Understanding the physics of graphene nanoribbons is a key requirement to build novel nanoelectronic devices on the basis of graphene. Resonant Raman spectroscopy is a powerful tool for the investigation of carbon nanomaterials, in particular for studying both their vibrational and electronic properties. Moreover it allows to investigate the electron phonon coupling. Polarization depended Raman scattering can also give information about the edge configuration of graphene nanostructures. We present Raman line scans on lithographically defined and etched single-layer graphene nanoribbons at different incident polarization angles. The length of the nanoribbons is in the range of 1.5-2 micrometer and the width ranges from 100-500 nm. We discuss the dependence of the Raman intensity on the polarization.