Current fluctuations in composite conductors: Beyond the second cumulant

Abstract

Employing the non-linear $\sigma$-model we analyze current fluctuations in coherent composite conductors which contain a diffusive element in-between two tunnel barriers. For such systems we explicitly evaluate the frequency-dependent third current cumulant which also determines the leading Coulomb interaction correction to shot noise. Our predictions can be directly tested in future experiments.

6 pages, 1 figure

References in corpus (3)

• Keldysh technique and non-linear sigma-model: basic principles and applications
• Frequency-dependent current correlation functions from scattering theory
• High Frequency Dynamics and Third Cumulant of Quantum Noise

Cited by in corpus (4)

• Measurement of finite-frequency current statistics in a single-electron transistor
• Counting quantum jumps: a summary and comparison of fixed-time and fluctuating-time statistics in electron transport
• Non-renewal statistics in quantum transport through the eyes of first-passage and waiting time distributions
• Quantum Transport in Presence of Bound States -- Noise Power