Non-Markovian full counting statistics in quantum dot molecules

被引：0
作者：
Hai-Bin Xue
Hu-Jun Jiao
Jiu-Qing Liang
Wu-Ming Liu
机构：
[1] College of Physics and Optoelectronics,Department of Physics
[2] Taiyuan University of Technology,undefined
[3] Shanxi University,undefined
[4] Institute of Theoretical Physics,undefined
[5] Shanxi University,undefined
[6] Beijing National Laboratory for Condensed Matter Physics,undefined
[7] Institute of Physics,undefined
[8] Chinese Academy of Sciences,undefined
来源：
Scientific Reports | / 5卷
关键词：
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Full counting statistics of electron transport is a powerful diagnostic tool for probing the nature of quantum transport beyond what is obtainable from the average current or conductance measurement alone. In particular, the non-Markovian dynamics of quantum dot molecule plays an important role in the nonequilibrium electron tunneling processes. It is thus necessary to understand the non-Markovian full counting statistics in a quantum dot molecule. Here we study the non-Markovian full counting statistics in two typical quantum dot molecules, namely, serially coupled and side-coupled double quantum dots with high quantum coherence in a certain parameter regime. We demonstrate that the non-Markovian effect manifests itself through the quantum coherence of the quantum dot molecule system and has a significant impact on the full counting statistics in the high quantum-coherent quantum dot molecule system, which depends on the coupling of the quantum dot molecule system with the source and drain electrodes. The results indicated that the influence of the non-Markovian effect on the full counting statistics of electron transport, which should be considered in a high quantum-coherent quantum dot molecule system, can provide a better understanding of electron transport through quantum dot molecules.
引用
收藏
相关论文
共 163 条
  • [21] Haug RJ(1996)Microscopic derivation of rate equations for quantum transport Phys. Rev. B 53 15932-undefined
  • [22] Fricke L(2004)Theory of transport through quantum-dot spin valves in the weak-coupling regime Phys. Rev. B 70 195345-undefined
  • [23] Maisi VF(2005)Probing level renormalization by sequential transport through double quantum dots Phys. Rev. B 72 205319-undefined
  • [24] Kambly D(2005)Super-Poissonian shot noise in the resonant tunneling due to coupling with a localized level Appl. Phys. Lett. 87 032105-undefined
  • [25] Flindt C(2006)Theoretical investigations for shot noise in correlated resonant tunneling through a quantum coupled system J. Appl. Phys. 99 063710-undefined
  • [26] Pekola JP(2006)Quantum master equation for electron transport through quantum dots and single molecules Phys. Rev. B 74 235309-undefined
  • [27] Aguado R(2007)Coherent transport through an inter-acting double quantum dot: Beyond sequential tunneling Phys. Rev. B 75 235314-undefined
  • [28] Brandes T(2009)Interference effects on the transport characteristics of a benzene single-electron transistor Phys. Rev. B 79 235404-undefined
  • [29] Kießlich G(2009)Quantum transport through nanostructures in the singular-coupling limit Phys. Rev. B 80 033302-undefined
  • [30] Schöll E(2009)Transport statistics of interacting double dot systems: Coherent and non-Markovian effects Phys. Rev. B 80 245107-undefined
12345678910