# IS THE REGIME WITH SHOT NOISE SUPPRESSION BY A FACTOR 1/3 ACHIEVABLE IN SEMICONDUCTOR DEVICES WITH MESOSCOPIC DIMENSIONS?

@article{Marconcini2012ISTR, title={IS THE REGIME WITH SHOT NOISE SUPPRESSION BY A FACTOR 1/3 ACHIEVABLE IN SEMICONDUCTOR DEVICES WITH MESOSCOPIC DIMENSIONS?}, author={Paolo Marconcini and Massimo Macucci and Demetrio Logoteta and Massimo Totaro}, journal={Fluctuation and Noise Letters}, year={2012}, volume={11}, pages={1240012} }

We discuss the possibility of diffusive conduction and thus of suppression of shot noise by a factor 1/3 in mesoscopic semiconductor devices with two-dimensional and one-dimensional potential disorder, for which existing experimental data do not provide a conclusive result. On the basis of our numerical analysis, we conclude that it is quite difficult to achieve diffusive transport over a reasonably wide parameter range, unless the device dimensions are increased up to the macroscopic scale…

## 24 Citations

Effect of potential disorder on shot noise suppression in nanoscale devices

- Materials Science, Computer Science2013 IEEE/ACM International Symposium on Nanoscale Architectures (NANOARCH)
- 2013

It is shown that only in very particular conditions the diffusive noise regime is reached, while in more general cases only a gradual increase of shot noise toward the full shot noise behavior of strongly localized systems is observed as the disorder increases.

Effect of potential fluctuations on shot noise suppression in mesoscopic cavities

- Physics
- 2013

We perform a numerical investigation of the effect of the disorder associated with randomly located impurities on shot noise in mesoscopic cavities. We show that such a disorder becomes dominant in…

Numerical simulation of shot noise in disordered graphene

- Materials Science2013 22nd International Conference on Noise and Fluctuations (ICNF)
- 2013

Following the intriguing results analytically obtained for the shot noise suppression in wide and short graphene samples with doped contacts, efforts were made to achieve an experimental…

Shot noise suppression due to a magnetic field in disordered conductors

- Physics
- 2015

We investigate the effect of an orthogonal magnetic field on a 2-D disordered wire, by means of a numerical model based on the recursive Green’s function technique. We discuss the resulting behavior…

Origin of shot noise in mesoscopic cavities

- Physics
- 2016

We discuss several aspects of shot noise suppression in mesoscopic cavities, focusing on the so-called “quantum to classical” crossover that can be induced by an increase of the width of the…

Simulation of shot noise measurement experiments in graphene

- Physics2015 International Conference on Noise and Fluctuations (ICNF)
- 2015

We have adopted an approximate technique for the determination of the potential landscape and an envelope-function based transport calculation to simulate the shot noise properties, in the presence…

Geometry-dependent conductance and noise behavior of a graphene ribbon with a series of randomly spaced potential barriers

- Materials ScienceJournal of Applied Physics
- 2019

We perform an envelope-function based numerical analysis of the effect of a sequence of randomly spaced potential barriers on the conductance and shot noise of an armchair graphene ribbon. The…

Effect of magnetic field on the noise behavior of disordered conductors

- Physics2015 International Conference on Noise and Fluctuations (ICNF)
- 2015

Shot noise suppression induced by magnetic field has been a topic of intense scientific debate in the last two decades, in particular with reference to the so-called chaotic or mesoscopic cavities,…

Symmetry-dependent transport behavior of graphene double dots

- Materials Science, Physics
- 2013

By means of an envelope function analysis, we perform a numerical investigation of the conductance behavior of a graphene structure consisting of two regions (dots) connected to the entrance and exit…

Transport analysis of graphene-based devices with width discontinuities

- Physics2014 International Workshop on Computational Electronics (IWCE)
- 2014

We have developed a code for the simulation of graphene-based devices consisting of cascaded armchair sections with width discontinuities, in the presence of a generic potential landscape. This is…

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