Effect of long-range Coulomb interaction on shot-noise suppression in ballistic transport

Details Effect of long-range Coulomb interaction on shot-noise suppression in ballistic transport Effect of long-range Coulomb interaction on shot-noise suppression in ballistic transport

1997-03-11

arxiv.org/abs/cond-mat/9703110v2

Phys. Rev. B 56 (1997) 6424

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

RevTex, 4 pages, 4 figures, minor corrections

Scientific paper

10.1103/PhysRevB.56.6424

We present a microscopic analysis of shot-noise suppression due to long-range Coulomb interaction in semiconductor devices under ballistic transport conditions. An ensemble Monte Carlo simulator self-consistently coupled with a Poisson solver is used for the calculations. A wide range of injection-rate densities leading to different degrees of suppression is investigated. A sharp tendency of noise suppression at increasing injection densities is found to scale with a dimensionless Debye length related to the importance of space-charge effects in the structure.

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