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Chin. Phys. B, 2011, Vol. 20(9): 097306    DOI: 10.1088/1674-1056/20/9/097306
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Dynamical localization effect in a coupled quantum dot array driven by an AC magnetic field

Xia Jun-Jie(夏俊杰) and Nie Yi-Hang(聂一行)
Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China
Abstract  We have studied the transport properties of a ring-coupled quantum dot array driven by an AC magnetic field, which is connected to two leads, and we give the response of the transport current to the dynamical localization. We found that when the ratio of the magnetic flux to the total quantum dots number is a root of the zeroth order Bessel function, dynamical localization and collapse of quasi-energy occurs and importantly, the transport current displays a dip which is the signal of dynamical localization. The dynamical localization effect is strengthened as a result of the increase of the quantum dot number, and it is weakened on account of the increase of the dots-lead hopping rate.
Keywords:  dynamical localization      quantum dot ring      non-equilibrium Green's function  
Received:  22 March 2011      Revised:  21 April 2011      Accepted manuscript online: 
PACS:  73.63.Kv (Quantum dots)  
  85.35.Ds (Quantum interference devices)  
  72.20.Ht (High-field and nonlinear effects)  
Fund: .

Cite this article: 

Xia Jun-Jie(夏俊杰) and Nie Yi-Hang(聂一行) Dynamical localization effect in a coupled quantum dot array driven by an AC magnetic field 2011 Chin. Phys. B 20 097306

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