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The phonon dispersion of graphite by inelastic x-ray scattering
M. Mohr, J. Maultzsch, E. Dobardzic +6
We present the full in-plane phonon dispersion of graphite obtained from inelastic x-ray scattering, including the optical and acoustic branches, as well as the mid-frequency range…
Anharmonic effects in MgB2? A comparative inelastic X-ray scattering and Raman study
Matteo d'Astuto, Matteo Calandra, Stephanie Reich +7
We study anharmonic effects in MgB2 by comparing Inelastic X-ray and Ramanscattering together with ab-initio calculations. Using high statistics and high q resolution measurements…
Radial breathing mode of single-walled carbon nanotubes: Optical transition energies and chiral-index assignment
J. Maultzsch, H. Telg, S. Reich +1
We present a comprehensive study of the chiral-index assignment of carbon nanotubes in aqueous suspensions by resonant Raman scattering of the radial breathing mode. We determine t…
Exciton binding energies in carbon nanotubes from two-photon photoluminescence
J. Maultzsch, R. Pomraenke, S. Reich +7
One- and two-photon luminescence excitation spectroscopy showed a series of distinct excitonic states in single-walled carbon nanotubes. The energy splitting between one- and two-p…
Exciton resonances quench the photoluminescence of zigzag carbon nanotubes
Stephanie Reich, Christian Thomsen, John Robertson
We show that the photoluminescence intensity of single-walled carbon nanotubes is much stronger in tubes with large chiral angles - armchair tubes - because exciton resonances make…
Chirality distribution and transition energies of carbon nanotubes
H. Telg, J. Maultzsch, S. Reich +2
From resonant Raman scattering on isolated nanotubes we obtained the optical transition energies, the radial breathing mode frequency and Raman intensity of both metallic and semic…