Extraordinary electron transmission through a periodic array of quantum dots |
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| Authors: | Petrosyan L S Kirakosyan A S Shahbazyan T V |
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| Institution: | Department of Medical Physics, Yerevan State Medical University, 2 Koryun Street, Yerevan, 0025, Armenia and Department of Physics, Jackson State University, Jackson, Mississippi 39217 USA. |
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| Abstract: | We study electron transmission through a periodic array of quantum dots (QD) sandwiched between doped semiconductor leads. When the Fermi wavelength of tunneling electron exceeds the array lattice constant, the off-resonant per QD conductance is enhanced by several orders of magnitude relative to the single-QD conductance. The physical mechanism of the enhancement is delocalization of a small fraction of system eigenstates caused by coherent coupling of QDs via the electron continuum in the leads. |
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