Barbosa A L R, Hussein M S, Ramos J G G S
Departamento de Física, Universidade Federal Rural de Pernambuco, Dois Irmãos, 52171-900 Recife, Pernambuco, Brazil.
Phys Rev E Stat Nonlin Soft Matter Phys. 2013 Jul;88(1):010901. doi: 10.1103/PhysRevE.88.010901. Epub 2013 Jul 1.
We investigate the correlation functions of mesoscopic electronic transport in open chaotic quantum dots with finite tunnel barriers in the crossover between Wigner-Dyson ensembles. Using an analytical stub formalism, we show the emergence of a depletion and amplification of conductance fluctuations as a function of tunnel barriers for both parametric variations of electron energy and magnetoconductance fields. Furthermore, even for pure Dyson ensembles, correlation functions of conductance fluctuations in chaotic quantum dots can exhibit anticorrelation. Experimental support to our findings is pointed out.
我们研究了在维格纳-戴森系综交叉区域中具有有限隧道势垒的开放混沌量子点中的介观电子输运相关函数。使用一种解析短截线形式，我们展示了对于电子能量和磁导场的参数变化，作为隧道势垒函数的电导涨落的耗尽和放大现象的出现。此外，即使对于纯戴森系综，混沌量子点中电导涨落的相关函数也可以表现出反相关性。文中指出了对我们研究结果的实验支持。
