The electronic transport in the quantum dot array for an arbitrary number of dots in which the quantum dot A is alternated with the quantum dot B is studied with the exact Green's function calculation. The algebraic structures of the DC current, the differential conductance, and the density of states for the alternating A/B quantum dot array are obtained analytically. The results show that the two-step-like DC current, the two-main-peak-like differential conductance, and the multi-peak-like density of states will be sensitively modified by the number of dots and the difference for the one-electron level and the resonant width of the quantum dot A with ones of the quantum dot B.
1.Univ Elect Sci & Technol China, Sch Phys Elect, Chengdu 610054, Peoples R China 2.Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Microfabricat, Chengdu 610209, Peoples R China
Recommended Citation:
Lu, X. H.,Teng, B. H.,Liu, H.,et al. Exact electronic transport in an alternating A/B quantum dot array[J]. EUROPEAN PHYSICAL JOURNAL B,2009,72(4):497-502.
