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Universality of the 1/3 shot-noise suppression factor in nondegenerate diffusive conductors

T. Gonzalez·C. Gonzalez·J. Mateos·D. Pardo·L. Reggiani·O. M. Bulashenko·J. M. Rubi
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Abstract

Shot-noise suppression is investigated in nondegenerate diffusive conductors by means of an ensemble Monte Carlo simulator. The universal 1/3 suppression value is obtained when transport occurs under elastic collision regime provided the following conditions are satisfied: (i) The applied voltage is much larger than the thermal value; (ii) the length of the device is much longer than both the elastic mean free path and the Debye length. By fully suppressing carrier-number fluctuations, long range Coulomb interaction is essential to obtain the 1/3 value in the low-frequency limit.

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T. Gonzalez, C. Gonzalez, J. Mateos, D. Pardo, L. Reggiani, O. M. Bulashenko, J. M. Rubi. 1998-03-30. Universality of the 1/3 shot-noise suppression factor in nondegenerate diffusive conductors. https://doi.org/10.1103/physrevlett.80.2901

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