Coherent phonon dynamics in semiconducting carbon nanotubes: a quantitative study of electron-phonon coupling.
We excite and detect coherent phonons in semiconducting (6,5) carbon nanotubes via a sub-10-fs pump-probe technique. Simulation of the amplitude and phase profile via time-dependent wave packet theory yields excellent agreement with experimental results under the assumption of molecular excitonic states and allows determining the electron-phonon coupling strength for the two dominant vibrational modes.
Lüer
Larry
L
National Laboratory for Ultrafast and Ultraintense Optical Science, Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy.
Gadermaier
Christoph
C
Crochet
Jared
J
Hertel
Tobias
T
Brida
Daniele
D
Lanzani
Guglielmo
G