Crossover of thermal to shot noise in chaotic cavities

Details Crossover of thermal to shot noise in chaotic cavities Crossover of thermal to shot noise in chaotic cavities

2011-02-21

arxiv.org/abs/1102.4354v1

EPL 93 (2011) 67003

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 5 figures. To be published in Europhysics Letters

Scientific paper

10.1209/0295-5075/93/67003

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.

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