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Electron transport through a triple-quantum-dot ring in various kinds of dot-lead coupling configurations

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Abstract

Electron transport through a triple-quantum-dot ring in various kinds of dot-lead coupling configurations has been investigated using the nonequilibrium Green’s function technique. The conductance is numerically calculated as a function of the dots’ levels. The appearance of Fano resonance and the formation of bound state in the continuum strongly depend on the configuration of dot-lead coupling strengths. Moreover, a striking conductance dip is found and the conductance spectrum can be interchanged by tuning extra magnetic flux.

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Acknowledgments

The work is supported by Science and Technology Research Program of the Education Bureau of Heilongjiang Province (Grant No. 12531543).

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Authors and Affiliations

  1. School of Physics and Electronic Sciences, Guizhou Normal College, Guiyang, 550018, People’s Republic of China

    Z L He

  2. College of Electrical and Information Engineering, Heilongjiang Institute of Technology, Harbin, 150050, People’s Republic of China

    Z L He, P Li, J Y Bai & Y F Bai

  3. School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, People’s Republic of China

    D Zhang

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  1. Z L He
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  2. D Zhang
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  3. P Li
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Correspondence to D Zhang.

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He, Z.L., Zhang, D., Li, P. et al. Electron transport through a triple-quantum-dot ring in various kinds of dot-lead coupling configurations. Indian J Phys 88, 571–575 (2014). https://doi.org/10.1007/s12648-014-0447-0

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  • DOI: https://doi.org/10.1007/s12648-014-0447-0

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