ARTIFICIAL NETS FROM SUPERCONDUCTING NANOGRANULES
Ovchinnikov Yu.N., Kresin V.Z.

Received: August 29, 2011

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We show that a large transport current can flow through superconducting nets composed of nanoclusters. Although thermal and quantum fluctuations lead to a finite value of dissipation, this value can be very small in one- and two-dimensional systems for realistic parameters of the nanoclusters and distances between them. The value of the action for vortex tunneling at zero temperature can be made sufficiently large to make the dissipation negligibly small. We estimate the temperature T₀ of the transition from the thermal activation to quantum tunneling.