Collective Transport in Arrays of Quantum Dots

Details Collective Transport in Arrays of Quantum Dots Collective Transport in Arrays of Quantum Dots

1993-04-08

arxiv.org/abs/cond-mat/9304013v2

Physics

Condensed Matter

12 pages, 3 postscript files included, REVTEX v2, (also available by anonymous FTP from external.nj.nec.com, in directory /pub

Scientific paper

10.1103/PhysRevLett.71.3198

(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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