Phys. Rev. Lett. 71, 3198–3201 (1993)Collective transport in arrays of small metallic dotsReceived 18 March 1993; published in the issue dated 8 November 1993 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. © 1993 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.71.3198
DOI:
10.1103/PhysRevLett.71.3198
PACS:
73.40.Rw, 05.60.+w, 73.40.Gk
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