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10 papers
Second-Order Raman Scattering in Exfoliated Black Phosphorus
Alexandre Favron, Félix Antoine Goudreault, Vincent Gosselin +7
Second-order Raman scattering has been extensively studied in carbon-based nanomaterials, \emph{e.g.} nanotube and graphene, because it activates normally forbidden Raman modes tha…
Infrared Study of Charge Carrier Confinement in Doped (6,5) Carbon Nanotubes
Klaus H. Eckstein, Florian Hirsch, Richard Martel +1
Electronic degrees of freedom and their coupling to lattice vibrations in semiconductors can be strongly modified by doping. Accordingly, the addition of surplus charge carriers to…
Highly Polarized Light Emission from 6T@BNNT Nanohybrids
A. Badon, C. Allard, F. Fossard +6
The polarized fluorescence emission of organic fluorophores has been extensively studied in photonics and is increasingly exploited in single molecule scale bio-imaging. Expanding…
Suspended graphene variable capacitor
M. AbdelGhany, F. Mahvash, M. Mukhopadhyay +4
The tuning of electrical circuit resonance with a variable capacitor, or varactor, finds wide application with the most important being wireless telecommunication. We demonstrate a…
High field response of gated graphene at THz frequencies
Hadi Razavipour, Hassan A. Hafez, Ibraheem Al-Naib +11
We study the Fermi energy level dependence of nonlinear terahertz (THz) transmission of gated multi-layer and single-layer graphene transferred onto sapphire and quartz substrates.…
Two-Dimensional Magnetotransport in a Black Phosphorus Naked Quantum Well
V. Tayari, N. Hemsworth, I. Fakih +5
Black phosphorus (bP) is the second known elemental allotrope with a layered crystal structure that can be mechanically exfoliated down to atomic layer thickness. We have fabricate…
Exfoliating pristine black phosphorus down to the monolayer: photo-oxidation and electronic confinement effects
A. Favron, E. Gaufrès, F. Fossard +7
Thin layers of black phosphorus have recently raised interest for their two-dimensional (2D) semiconducting properties, such as tunable direct bandgap and high carrier mobilities.…
Phonon-Induced Transparency in Functionalized Single Layer Graphene
Bruno Rousseau, François Lapointe, Minh Nguyen +8
Herein, intervalley scattering is exploited to account for anomalous antiresonances in the infrared spectra of doped and disordered single layer graphene. We present infrared spect…
Fano Resonances in Mid-Infrared Spectra of Single-Walled Carbon Nanotubes
François Lapointe, Étienne Gaufrés, Isabelle Tremblay +3
This work revisits the physics giving rise to the carbon nanotubes phonon bands in the mid- infrared. Our measurements of doped and undoped samples of single-walled carbon nanotube…
Carbon Nanotubes as Schottky Barrier Transistors
S. Heinze, J. Tersoff, R. Martel +3
We show that carbon nanotube transistors operate as unconventional "Schottky barrier transistors", in which transistor action occurs primarily by varying the contact resistance rat…