263 citations · 795 across the 18 of their papers we have counts for
5 papers · 1 filter
Scaling of exciton binding energy with external dielectric function in carbon nanotubes
Andrew G. Walsh, A. Nickolas Vamivakas, Yan Yin +4
We develop a scaling relationship between the exciton binding energy and the external dielectric function in carbon nanotubes. We show that the electron-electron and electron-hole…
Strong extinction of a far-field laser beam by a single quantum dot
A. N. Vamivakas, M. Atature, J. Dreiser +6
Through the utilization of index-matched GaAs immersion lens techniques we demonstrate a record extinction (12%) of a far-field focused laser by a single InAs/GaAs quantum dot. Thi…
Screening of Excitons in Single, Suspended Carbon Nanotubes
Andrew G. Walsh, A. Nickolas Vamivakas, Yan Yin +4
Resonant Raman spectroscopy of single carbon nanotubes suspended across trenches displays red shifts of up to 30 meV of the electronic transition energies as a function of the surr…
Chirality dependence of the radial breathing phonon mode density in single wall carbon nanotubes
A. N. Vamivakas, Y. Yin, A. G. Walsh +3
A mass and spring model is used to calculate the phonon mode dispersion for single wall carbon nanotubes (SWNTs) of arbitrary chirality. The calculated dispersions are used to dete…
Exciton mediated one phonon resonant Raman scattering from one-dimensional systems
A. N. Vamivakas, A. Walsh, Y. Yin +3
We use the Kramers-Heisenberg approach to derive a general expression for the resonant Raman scattering cross section from a one-dimensional (1D) system explicitly accounting for e…