Bułka Bogdan R, Łuczak Jakub
Institute of Molecular Physics, Polish Academy of Sciences, ul. M. Smoluchowskiego 17, 60-179 Poznań, Poland.
Entropy (Basel). 2019 May 24;21(5):527. doi: 10.3390/e21050527.
We present studies of the electron transport and circular currents induced by the bias voltage and the magnetic flux threading a ring of three quantum dots coupled with two electrodes. Quantum interference of electron waves passing through the states with opposite chirality plays a relevant role in transport, where one can observe Fano resonance with destructive interference. The quantum interference effect is quantitatively described by local bond currents and their correlation functions. Fluctuations of the transport current are characterized by the Lesovik formula for the shot noise, which is a composition of the bond current correlation functions. In the presence of circular currents, the cross-correlation of the bond currents can be very large, but it is negative and compensates for the large positive auto-correlation functions.
我们展示了关于由偏置电压和穿过与两个电极耦合的三量子点环的磁通量所诱导的电子输运和圆电流的研究。通过具有相反手性的状态的电子波的量子干涉在输运中起着重要作用，在其中可以观察到具有相消干涉的法诺共振。量子干涉效应由局部键电流及其相关函数进行定量描述。输运电流的涨落由用于散粒噪声的列索维克公式表征，该公式是键电流相关函数的组合。在存在圆电流的情况下，键电流的互相关可能非常大，但它是负的，并补偿了大的正自相关函数。
