Collective transport in arrays of small metallic dots

A. Alan Middleton, Ned S. Wingreen

Research output: Contribution to journalArticlepeer-review

381 Scopus citations


Collective charge transport is studied in one- and two-dimensional arrays of small normal-metal dots separated by tunneling 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.

Original languageEnglish (US)
Pages (from-to)3198-3201
Number of pages4
JournalPhysical Review Letters
Issue number19
StatePublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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