Hannover 2010 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 7: Poster: Femtosecond Spectroscopy
MO 7.12: Poster
Dienstag, 9. März 2010, 16:00–18:30, Lichthof
Two-dimensional spectroscopy of individual single-wall carbon nanotubes — •Ulrike Selig, Nadja Bertleff, Dominik Stich, Tobias Hertel, and Tobias Brixner — Institut für Physikalische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg
Possible applications as nano-electronic devices or in new composite materials have caused considerable interest in carbon nanotubes and their unique electronic and mechanical properties [1,2]. One of the outstanding features of individual single-wall carbon nanotubes (SWNT) is their quasi one-dimensional (1D) band-structure.
Here we present first results of degenerate pump–probe experiments and two-dimensional spectra of (6,5) SWNTs excited with 30fs pulses with a center wavelength of 565nm, along with an interpretation of the observed relaxation processes from the S2 electronic state.
[1] R. Saito, G. Dresselhaus, M. Dresselhaus, Physical Properties of Carbon Nanotubes, London, Imperial College Press, 1998.
[2] T.W. Ebbesen, Carbon Nanotubes, Preparation and Properties, CRC Press, Boca Raton, FL, 1997.