Coherent electron transport in a Si quantum dot dimer

Details Coherent electron transport in a Si quantum dot dimer Coherent electron transport in a Si quantum dot dimer

2001-11-15

arxiv.org/abs/cond-mat/0111283v1

Phys. Rev. Lett. 88, 186801 (2002)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, Revtex

Scientific paper

We show that the coherence of charge transfer through a weakly coupled double-dot dimer can be determined by analyzing the statistics of the conductance pattern, and does not require large phase coherence length in the host material. We present an experimental study of the charge transport through a small Si nanostructure, which contains two quantum dots. The transport through the dimer is shown to be coherent. At the same time, one of the dots is strongly coupled to the leads, and the overall transport is dominated by inelastic co-tunneling processes.

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