Shot noise in diffusive conductors: A quantitative analysis of electron-phonon interaction effects

Abstract

Using the 'drift-diffusion-Langevin' equation, we have quantitatively analyzed the effects of electron energy relaxation via their interaction with phonons, generally in presence of electron-electron interaction, on shot noise in diffusive conductors. We have found that the noise power $S_I(\omega )$ (both at low and high observation frequencies $\omega$) drops to half of its 'mesoscopic' value only at $\beta \gtrsim 100,$ where $\beta$ is the ratio of the sample length $L$ to the energy relaxation length $l_{% {\rm ph}}$ (the latter may be much larger then the dephasing length). It means in particular that at low temperatures the shot noise may be substantial even when $L\sim 10^{-2}$ -- $10^{-1}$ cm, and the conductor is 'macroscopic' in any other respect.

4 pages, 3 figures

References in corpus (1)

• Intrinsic Decoherence in Mesoscopic Systems

Cited by in corpus (12)

• Shot Noise in Mesoscopic Conductors
• Transport properties of strongly coupled electron-phonon liquids
• Andreev Reflection Enhanced Shot Noise in Mesoscopic SNS Junctions
• Shot noise suppression at 1D hopping
• Shot Noise Suppression at 2D Hopping
• Electron heating in metallic resistors at sub-Kelvin temperature
• Microscopic analysis of shot-noise suppression in nondegenerate diffusive conductors
• Kinetic theory of shot noise in non-degenerate diffusive conductors
• What can we learn about the dynamics of transported spins by measuring shot noise in spin-orbit-coupled nanostructures?
• Nonequilibrium distribution functions in electron transport: Decoherence, energy redistribution and dissipation
• Nonequilibrium electron distribution function in a voltage-biased nanowire: A nonequilibrium Green's function approach
• Sub-electron Charge Relaxation via 2D Hopping Conductors