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Suppression of non-Poissonian shot noise by Coulomb correlation in ballistic conductors

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Kochelap, V. A. (Viacheslav Aleksandrovich)

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We investigate the current injection into a ballistic conductor under the space-charge limited regime, when
the distribution function of injected carriers is an arbitrary function of energy Fc(«). The analysis of the
coupled kinetic and Poisson equations shows that the injected current fluctuations may be essentially suppressed
by Coulomb correlations, and the suppression level is determined by the shape of Fc(«). This is in
contrast to the time-averaged quantities: the mean current and the spatial profiles are shown to be insensitive
to Fc(«) in the leading-order terms at high biases. The asymptotic high-bias behavior for the energy resolved
shot-noise suppression has been found for an arbitrary ~non-Poissonian! injection, which may suggest a new
field of investigation on the optimization of the injection energy profile to achieve the desired noisesuppression
level.

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Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.62.8184

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Articles publicats en revistes (Física de la Matèria Condensada)

# metadata.dc.title[].value
Suppression of non-Poissonian shot noise by Coulomb correlation in ballistic conductors