Crossover of thermal to shot noise in chaotic cavities
arXiv:1102.4354 · doi:10.1209/0295-5075/93/67003
Abstract
We study the crossover between thermal and shot-noise power in a chaotic quantum dot in the presence of non-ideal contacts at finite temperature. The result explicitly demonstrates that the temperature affect the suppression-amplification effect present in the main quantum noise. In particular, the weak localization contribution to the noise has an anomalous thermal behavior when one let the barriers vary, indicating the presence of a critical point related to specific value of the tunneling barriers. We also show how to get to the opaque limit of the quantum dot at finite temperature.
arXiv comment6 pages, 5 figures. To be published in Europhysics Letters
References in corpus (11)
- Shot Noise in Mesoscopic Conductors
- Random-Matrix Theory of Quantum Transport
- Counting statistics of single-electron transport in a quantum dot
- Diagrammatic method of integration over the unitary group, with applications to quantum transport in mesoscopic systems
- Electron counting in quantum dots
- Semi-classical Theory of Conductance and Noise in Open Chaotic Cavities
- Suppression of weak-localization (and enhancement of noise) by tunnelling in semiclassical chaotic transport
- Cascade approach to current fluctuations in a chaotic cavity
- Finite frequency quantum noise in an interacting mesoscopic conductor
- Statistics of thermal to shot noise crossover in chaotic cavities
- Noise in mesoscopic physics