Effect of dephasing on charge-counting statistics in chaotic cavities

被引:37
作者
Blanter, YM [1 ]
Schomerus, H
Beenakker, CWJ
机构
[1] Univ Geneva, Dept Phys Theor, CH-1211 Geneva 4, Switzerland
[2] Delft Univ Technol, Dept Appl Phys, NL-2628 CJ Delft, Netherlands
[3] Leiden Univ, Inst Lorentz, NL-2300 RA Leiden, Netherlands
来源
PHYSICA E | 2001年 / 11卷 / 01期
关键词
shot noise; fluctuations; quantum statistics; transport processes; quantum dots;
D O I
10.1016/S1386-9477(01)00160-6
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We calculate the cumulants of the charge transmitted through a chaotic cavity in the limit that the two openings have a large number of scattering channels. The shot noise, which is the second cumulant, is known to be insensitive to dephasing in this limit. Unexpectedly, the fourth and higher cumulants are found to depend on dephasing: A semiclassical theory and a quantum mechanical model with strong dephasing give a result different from a fully phase-coherent quantum mechanical theory. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:1 / 7
页数:7
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