# 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… Expand

#### 24 Citations

Effect of potential disorder on shot noise suppression in nanoscale devices

- Materials Science, Computer Science
- 2013 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. Expand

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… Expand

Numerical simulation of shot noise in disordered graphene

- Materials Science
- 2013 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… Expand

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… Expand

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… Expand

Simulation of shot noise measurement experiments in graphene

- Physics
- 2015 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… Expand

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

- Materials Science
- Journal 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… Expand

Effect of magnetic field on the noise behavior of disordered conductors

- Physics
- 2015 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,… Expand

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… Expand

Transport analysis of graphene-based devices with width discontinuities

- Physics
- 2014 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… Expand

#### References

SHOWING 1-10 OF 45 REFERENCES

Analysis of shot-noise suppression in disordered quantum wires

- 2003

We present a numerical model for shot-noise suppression in a semiconductor quantum wire, based on parameters obtained from a purposely fabricated and characterized device. Shot-noise suppression is… Expand

Numerical investigation of shot-noise suppression in diffusive conductors

- Physics
- 2003

We present a numerical study of shot noise in diffusive mesoscopic conductors, aimed at a quantitative understanding of the conditions needed for achieving the 1/3 suppression factor predicted from… Expand

Shot Noise in Mesoscopic Systems

- Physics
- 1997

This is a review of shot noise, the time-dependent fluctuations in the electrical current due to the discreteness of the electron charge, in small conductors. The shot-noise power can be smaller than… Expand

1/3-shot-noise suppression in diffusive nanowires

- Physics
- 1999

We report low-temperature shot-noise measurements of short diffusive Au wires attached to electron reservoirs of varying sizes. The measured noise suppression factor compared to the classical noise… Expand

Drastic reduction of shot noise in semiconductor superlattices.

- Materials Science, Physics
- Physical review letters
- 2006

We have found experimentally that the shot noise of the tunneling current I through an undoped semiconductor superlattice is reduced with respect to the Poissonian noise value 2eI, and that the noise… Expand

Shot noise in mesoscopic conductors

- Physics
- 2000

Abstract Theoretical and experimental work concerned with dynamic fluctuations has developed into a very active and fascinating subfield of mesoscopic physics. We present a review of this development… Expand

Quantum analysis of shot noise suppression in a series of tunnel barriers

- Physics
- 2009

We report the results of an analysis, based on a straightforward quantum-mechanical model, of shot noise suppression in a structure containing cascaded tunneling barriers. Our results exhibit a… Expand

Shot-noise current-current correlations in multiterminal diffusive conductors

- Physics
- 1997

We investigate the correlations in the current fluctuations at different terminals of metallic diffusive conductors. We start from scattering matrix expressions for the shot noise and use the… Expand

Numerical simulations of shot noise in degenerate disordered conductors in reduced dimensions

- Physics
- 2001

Monte Carlo calculations of shot noise power S in one- and two-dimensional Anderson models of a disordered conductor are presented. For quasi-one-dimensional geometry all theoretical results derived… Expand

Shot-noise anomalies in nondegenerate elastic diffusive conductors

- Physics
- 2002

We present a theoretical investigation of shot-noise properties in nondegenerate elastic diffusive conductors. Both Monte Carlo simulations and analytical approaches are used. Two interesting… Expand