Regensburg 2007 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 16: Colloids and Nanoparticles III
CPP 16.4: Talk
Tuesday, March 27, 2007, 17:45–18:00, H47
Raman intensity profiles of individual single-walled carbon nanotubes — •Martin Fouquet1, Hagen Telg1, Janina Maultzsch2, Christian Thomsen1, James Hone3, and Tony Heinz2 — 1Institut für Festkörperphysik, Technische Universität Berlin, Germany — 2Departments of Physics and Electrical Engineering, Columbia University, USA — 3Department of Mechanical Engineering, Columbia University, USA
We performed resonant Raman measurements on individual single-walled carbon nanotubes grown across a 100 micrometer wide slit. We collected intensity profiles of the radial breathing mode (RBM) and the high energy modes (HEM) by varying the excitation energy between 1.85 eV and 2.2 eV. In metallic nanotubes, the characteristic Fano-lineshape of the HEM is found, confirming that it is intrinsic to individual metallic tubes. We observe that the lineshape and peak positions depend on the resonance Raman condition, and their dependence on excitation energy is discussed.