Influence of electron-electron scattering on shot noise in diffusive contacts
- 15 August 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 52 (7), 4740-4743
- https://doi.org/10.1103/physrevb.52.4740
Abstract
Shot noise in contacts with a small elastic mean free path in the presence of electron-electron scattering is calculated using the Boltzmann-Langevin approach and the approximation of effective electron tempreature. In the case of strong electron-electron scattering, the ratio between the shot noise and its classical value 2e‖I‖ increases from 1/3 to √3 /4 owing to an increasing band of partially occupied states. The influence of electron-phonon scattering on the shot noise at finite temperatures is also considered. As this scattering decreases the energy of electron gas, it suppresses the shot noise at high voltages and increases the low-voltage boundary of the shot-noise range at finite temperatures. However, the noise decrease with increasing contact length more slowly than its reciprocal.
Keywords
This publication has 5 references indexed in Scilit:
- Experimental study of reduced shot noise in a diffusive mesoscopic conductorPhysical Review B, 1994
- Mesoscopic fluctuations in the shot-noise power of metalsPhysical Review B, 1992
- On the shot noise in dirty metal contactsPhysics Letters A, 1992
- Effects of dephasing and dissipation on quantum noise in conductorsPhysical Review Letters, 1992
- Suppression of shot noise in metallic diffusive conductorsPhysical Review B, 1992