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Collective Transport in Arrays of Quantum Dots

A. Alan Middleton·Ned S. Wingreen
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Abstract

(WORDS: QUANTUM DOTS, COLLECTIVE TRANSPORT, PHYSICAL EXAMPLE OF KPZ) Collective charge transport is studied in one- and two-dimensional arrays of small normal-metal dots separated by tunnel barriers. At temperatures well below the charging energy of a dot, disorder leads to a threshold for conduction which grows linearly with the size of the array. For short-ranged interactions, one of the correlation length exponents near threshold is found from a novel argument based on interface growth. The dynamical exponent for the current above threshold is also predicted analytically, and the requirements for its experimental observation are described.

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A. Alan Middleton, Ned S. Wingreen. 1993-04-09. Collective Transport in Arrays of Quantum Dots. https://doi.org/10.1103/physrevlett.71.3198

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