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CPP: Chemische Physik und Polymerphysik

CPP 2: Colloids and Nanoparticles

CPP 2.7: Talk

Monday, March 27, 2006, 11:45–12:00, ZEU 160

Resonant Raman spectroscopy on isolated single-walled carbon nanotubes — •Martin Fouquet, Hagen Telg, Janina Maultzsch, and Christian Thomsen — Institut für Festkörperphysik, Technische Universität Berlin, Germany

We performed resonant Raman measurements on isolated single-walled carbon nanotubes deposited on a silicon substrate. Varying the excitation energy, we collected intensity profiles of the radial breathing mode (RBM) and the high energy mode (HEM). From the RBM we assign the chiral index of each observed tube. We then analyze the dependence of the HEM on excitation energy of the assigned tube. In particular we compare the HEM lineshape of metallic and semiconducting nanotubes.