Quantum superconductor-metal transition in a proximity array.
A theory of the zero-temperature superconductor-metal transition is developed for an array of superconductive islands (of size d) coupled via a disordered two-dimensional conductor with the dimensionless conductance g = Planck's over 2 pi/e(2)R(square)>>1. At T = 0 the macroscopically superconductive state of the array with lattice spacing b>>d is destroyed at g<g(c) approximately 0.1ln(2)(b/d). At high temperatures the normal-state resistance between neighboring islands at b = b(c) is much smaller than R(Q) = h/4e(2).
Feigel'man
M V
MV
L.D. Landau Institute for Theoretical Physics, Moscow, Russia.
Larkin
A I
AI
Skvortsov
M A
MA