We present a numerical approach, based on an optimized recursive Green's function procedure, for the simulation of the imaging process performed by scanning a device with a negatively biased probe while monitoring its conductance, or, as we propose in this contribution, its shot noise. We discuss a few examples, for an adiabatic quantum dot and for mesoscopic cavities, studied over a 200 × 300 points discretization mesh. The effect of disorder associated with the random distribution of dopants is included in some of the simulations by means of a semi-analytical procedure for the evaluation of the screening from the 2DEG.
High-Resolution Numerical Study of Conductance and Noise Imaging of Mesoscopic Devices
MACUCCI, MASSIMO;MARCONCINI, PAOLO
2004-01-01
Abstract
We present a numerical approach, based on an optimized recursive Green's function procedure, for the simulation of the imaging process performed by scanning a device with a negatively biased probe while monitoring its conductance, or, as we propose in this contribution, its shot noise. We discuss a few examples, for an adiabatic quantum dot and for mesoscopic cavities, studied over a 200 × 300 points discretization mesh. The effect of disorder associated with the random distribution of dopants is included in some of the simulations by means of a semi-analytical procedure for the evaluation of the screening from the 2DEG.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
