Extraordinary electron transmission through a periodic array of quantum dots

Details Extraordinary electron transmission through a periodic array of quantum dots Extraordinary electron transmission through a periodic array of quantum dots

2011-06-29

arxiv.org/abs/1106.5996v3

Phys. Rev. Lett. 107, 196802 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

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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