Nonlinear Voltage Dependence of the Shot Noise in Mesoscopic Degenerate Conductors with Strong Electron-Electron Scattering
It is shown that measurements of zero-frequency shot noise can provide information on electron-electron interaction, because the strong interaction results in the nonlinear voltage dependence of the shot noise in metallic wires. This is due to the fact that the Wiedemann-Franz law is no longer valid in the case of considerable electron-electron interaction. The deviations from this law increase the noise power and make it strongly dependent on the ratio of electron-electron and electron-impurity scattering rates.
Physical Review Letters
- Pub Date:
- November 2000
- Condensed Matter - Mesoscopic Systems and Quantum Hall Effect
- 4 pages, 2 figures, revised version according to referee's comments