273 citations · 520 across the 13 of their papers we have counts for
7 papers · 1 filter
Coulomb-Blockade directional coupler
P. Pingue, V. Piazza, F. Beltram +3
A tunable directional coupler based on Coulomb Blockade effect is presented. Two electron waveguides are coupled by a quantum dot to an injector waveguide. Electron confinement is…
Spin gap in the 2D electron system of GaAs/AlGaAs single heterojunctions in weak magnetic fields
V. S. Khrapai, A. A. Shashkin, E. L. Shangina +4
We study the interaction-enhanced spin gaps in the two-dimensional electron gas confined in GaAs/AlGaAs single heterojunctions subjected to weak magnetic fields. The values are obt…
Quasi-particle tunneling at a constriction in a fractional quantum Hall state
Stefano Roddaro, Vittorio Pellegrini, Fabio Beltram
Split-gate constrictions can be used to produce controllable scattering in a fractional quantum Hall state and constitute a very versatile model system for the investigation of non…
Mesoscopic supercurrent transistor controlled by nonequilibrium cooling
F. Giazotto, T. T. Heikkila, F. Taddei +3
The distinctive quasiparticle distribution existing under nonequilibrium in a superconductor-insulator-normal metal-insulator-superconductor (SINIS) mesoscopic line is proposed as…
Surface-acoustic-wave driven planar light-emitting device
Marco Cecchini, Giorgio De Simoni, Vincenzo Piazza +3
Electroluminescence emission controlled by means of surface acoustic waves (SAWs) in planar light-emitting diodes (pLEDs) is demonstrated. Interdigital transducers for SAW generati…
Inter-edge strong-to-weak scattering evolution at a constriction in the fractional quantum Hall regime
Stefano Roddaro, Vittorio Pellegrini, Fabio Beltram +2
Gate-voltage control of inter-edge tunneling at a split-gate constriction in the fractional quantum Hall regime is reported. Quantitative agreement with the behavior predicted for…