Frequency scales for current statistics of mesoscopic conductors -: art. no. 176804

被引:42
|
作者
Nagaev, KE
Pilgram, S
Büttiker, M
机构
[1] Russian Acad Sci, Inst Radioengn & Elect, Moscow 125009, Russia
[2] Univ Geneva, Dept Phys Theor, CH-1211 Geneva 4, Switzerland
基金
俄罗斯基础研究基金会;
关键词
D O I
10.1103/PhysRevLett.92.176804
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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.
引用
收藏
页码:176804 / 1
页数:4
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