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.
2004
Macucci, Massimo; Marconcini, Paolo
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/85398
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