Suppression of shot noise in metallic diffusive conductors
Abstract
The shot-noise power in a disordered phase-coherent conductor, much longer than the mean free path but much shorter than an inelastic scattering length, is one-third of the classical value of a Poisson process. The reduction below the classical value is a consequence of noiseless open quantum channels. In conductors much longer than an inelasic length, shot noise is further suppressed due to counterbalancing voltage fluctuations which enforce charge neutrality.
- Publication:
-
Physical Review B
- Pub Date:
- July 1992
- DOI:
- 10.1103/PhysRevB.46.1889
- Bibcode:
- 1992PhRvB..46.1889B
- Keywords:
-
- 73.50.Td;
- 72.70.+m;
- 72.10.Bg;
- 72.15.Rn;
- Noise processes and phenomena;
- Noise processes and phenomena;
- General formulation of transport theory;
- Localization effects