46 citations · 143 across the 8 of their papers we have counts for
8 papers
Origin of coherent G band phonon spectra in single wall carbon nanotubes
A. R. T. Nugraha, E. H. Hasdeo, G. D. Sanders +2
Coherent phonons in single wall carbon nanotubes (SWNTs) are observed as oscillations of the differential absorption coefficient as a function of time by means of pump-probe spectr…
Ultrafast Generation of Fundamental and Multiple-order Phonon Excitations in Highly-Enriched (6,5) Single-Wall Carbon Nanotubes
Y. -S. Lim, A. R. T. Nugraha, S. -J. Cho +14
Using a macroscopic ensemble of highly-enriched (6,5) single-wall carbon nanotubes, combined with high signal-to-noise ratio, time-dependent differential transmission spectroscopy,…
Excitonic effects on coherent phonon dynamics in single wall carbon nanotubes
Ahmad R. T. Nugraha, Eric Rosenthal, Eddwi H. Hasdeo +4
We discuss how excitons can affect the generation of coherent radial breathing modes in ultrafast spectroscopy of single wall carbon nanotubes. Photoexcited excitons can be localiz…
Coherent Phonon Dynamics in Short-Period InAs/GaSb Superlattices
G. T. Noe, H. J. Haugan, G. J. Brown +3
We have performed ultrafast pump-probe spectroscopy studies on a series of InAs/GaSb-based short-period superlattice (SL) samples with periods ranging from 46 Åto 71 Å. We observe…
Polarization dependence of coherent phonon generation and detection in highly-aligned single-walled carbon nanotubes
L. G. Booshehri, C. L. Pint, G. D. Sanders +9
We have investigated the polarization dependence of the generation and detection of radial breathing mode (RBM) coherent phonons (CP) in highly-aligned single-walled carbon nanotub…
Cyclotron Resonance in Ferromagnetic InMnAs/(Al,Ga)Sb Heterostructures
G. A. Khodaparast, J. Kono, Y. H. Matsuda +9
We report the observation of hole cyclotron resonance (CR) in InMnAs/(Al,Ga)Sb heterostructures in a wide temperature range covering both the paramagnetic and ferromagnetic phases.…
Ultrahigh field electron cyclotron resonance absorption in InMnAs films
M. A. Zudov, J. Kono, Y. H. Matsuda +6
We have carried out an ultrahigh field cyclotron resonance study of -type InMnAs films, with Mn composition ranging from 0 to 12%, grown on GaAs by low temperatu…
A scalable solid-state quantum computer based on quantum dot pillar structures
G. D. Sanders, K. W. Kim, W. C. Holton
We investigate an optically driven quantum computer based on electric dipole transitions within coupled single-electron quantum dots. Our quantum register consists of a freestandin…