Presence of asymmetric noise in multi-terminal chaotic cavities

Abstract

This work deals with chaotic quantum dot connected to two and four leads. We use standard diagrammatic procedure to integrate on the unitary group, to study the main term in the semiclassical expansion of the noise in the three pure Wigner-Dyson ensembles at finite frequency and temperature, in the noninteracting and interacting regimes. We investigate several limits, related to the temperature and the potential difference in the leads, in the presence of a capacitive environment. At the thermal crossover regime, we obtain general expressions described in terms of parameters that can be controlled experimentally. As an interesting result, we show the appearance of asymmetries in the noise, controlled by the topology of the cavity and the number of open channels in the corresponding terminals.

8 pages, 7 figures

References in corpus (8)

• Electron counting in quantum dots
• Evolution of the Kondo Effect in a Quantum Dot Probed by the Shot Noise
• Mesoscopic Spin Hall Effect
• Frequency-dependent current correlation functions from scattering theory
• Suppression of weak-localization (and enhancement of noise) by tunnelling in semiclassical chaotic transport
• Measuring Spin Accumulations with Current Noise
• The effect of symmetry class transitions on the shot noise in chaotic quantum dots
• Crossover of thermal to shot noise in chaotic cavities

Cited by in corpus (6)

• Tuning the Fano factor of graphene via Fermi velocity modulation
• Anti-correlation for Conductance Fluctuations in Chaotic Quantum Dots
• Generalized correlation functions for conductance fluctuations and the mesoscopic spin Hall effect
• Spin-to-Charge Conversion in 2D Electron Gas and Single-layer Graphene Devices
• Spin Accumulation Encoded in Electronic Noise for Mesoscopic Billiards with Finite Tunneling Rates
• Electronic transport in three-terminal chaotic systems with a tunnel barrier