Frequency scales for current statistics of mesoscopic conductors.
We calculate the third cumulant of current in a chaotic cavity with contacts of arbitrary transparency as a function of frequency. Its frequency dependence drastically differs from that of the conventional noise. In addition to a dispersion at the inverse RC time characteristic of charge relaxation, it has a low-frequency dispersion at the inverse dwell time of electrons in the cavity. This effect is suppressed if both contacts have either large or small transparencies.
Nagaev
K E
KE
Institute of Radioengineering and Electronics, Russian Academy of Sciences, Mokhovaya ulica 11, 125009 Moscow, Russia.
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