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Universality of the 1/3 shot-noise suppression factor in nondegenerate diffusive conductors
González, C.; Mateos, Javier; Pardo, D.; Reggiani, L. (Lino), 1941-; Bulashenko, Oleg; Rubí Capaceti, José Miguel
Universitat de Barcelona
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 greater 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.
Transport d'electrons
Soroll electrònic
Física estadística
Electron transport
Electronic noise
Statistical physics
(c) American Physical Society, 1998
Artículo
American Physical Society
         

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