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- City University of Hong KongHK52 papers
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20 papers · 1 filter
Effects of discrete topology on quantum transport across a graphene junction: A quantum gravity analogue
Naveed Ahmad Shah, Alonso Contreras-Astorga, François Fillion-Gourdeau +3
In this article, we investigate the effect of next-to-the-nearest atom hopping on Klein tunnelling in graphene. An effective quantum dynamics equation is obtained based on an emerg…
Optical manipulation of Rashba-split 2-Dimensional Electron Gas
M. Michiardi, F. Boschini, H. -H. Kung +11
In spintronic devices, the two main approaches to actively control the electrons' spin degree of freedom involve either static magnetic or electric fields. An alternative avenue re…
Plunging in the Dirac sea using graphene quantum dots
F. Fillion-Gourdeau, P. Levesque, S. MacLean
The dynamics of low energy charge carriers in a graphene quantum dot subjected to a time-dependent local field is investigated numerically. In particular, we study a configuration…
Temporal plasmonics: Fano and Rabi regimes in the time domain in metal nanostructures
Oscar Ávalos-Ovando, Lucas V. Besteiro, Zhiming Wang +1
The Fano and Rabi models represent remarkably common effects in optics. Here we study the coherent time dynamics of plasmonic systems exhibiting Fano and Rabi resonances. We demons…
Photoinduced polarization enhancement in biased bilayer graphene in the Landau level regime
Alexander López, Bertrand Berche, John Schliemann +2
We investigate the charge carrier dynamics in bilayer graphene subject to monochromatic laser irradiation within the Landau level quantization regime. Even though the radiation fie…
Interplay of pulse duration, peak intensity, and particle size in laser-driven electron emission from silica nanospheres
Jeffrey A. Powell, Adam M. Summers, Qingcao Liu +6
We present the results of a systematic study of photoelectron emission from gasphase dielectric nanoparticles (SiO2) irradiated by intense 25 fs, 780 nm linearly polarized laser pu…