Temperature and magnetic-field dependence of the quantum corrections to the conductance of a network of quantum dots

Details Temperature and magnetic-field dependence of the quantum corrections to the conductance of a network of quantum dots Temperature and magnetic-field dependence of the quantum corrections to the conductance of a network of quantum dots

2008-05-14

arxiv.org/abs/0805.2119v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

24 pages, 14 figures

Scientific paper

10.1103/PhysRevB.78.125313

We calculate the magnetic-field and temperature dependence of all quantum corrections to the ensemble-averaged conductance of a network of quantum dots. We consider the limit that the dimensionless conductance of the network is large, so that the quantum corrections are small in comparison to the leading, classical contribution to the conductance. For a quantum dot network the conductance and its quantum corrections can be expressed solely in terms of the conductances and form factors of the contacts and the capacitances of the quantum dots. In particular, we calculate the temperature dependence of the weak localization correction and show that it is described by an effective dephasing rate proportional to temperature.

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