Kindermann Markus, Trauzettel Björn
Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Phys Rev Lett. 2005 Apr 29;94(16):166803. doi: 10.1103/PhysRevLett.94.166803. Epub 2005 Apr 28.
We calculate the counting statistics of electron transfer through an open quantum dot with charging interaction. A dot that is connected to leads by two single-channel quantum point contacts in an in-plane magnetic field is described by a Luttinger liquid with impurity at the Toulouse point. We find that the fluctuations of the current through this conductor exhibit distinctive interaction effects. Fluctuations saturate at high voltages, while the mean current increases linearly with the bias voltage. All cumulants higher than the second one reach at large bias a temperature independent limit.
我们计算了通过具有充电相互作用的开放量子点的电子转移的计数统计。一个通过平面内磁场中的两个单通道量子点接触与引线相连的量子点，由处于图卢兹点的具有杂质的卢廷格液体描述。我们发现，通过该导体的电流涨落呈现出独特的相互作用效应。涨落在高电压下饱和，而平均电流随偏置电压线性增加。所有高于二阶的累积量在大偏置时达到与温度无关的极限。
