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Quantum superconductor-metal transition in a proximity array

M. V. Feigel'man·A. I. Larkin·M. A. Skvortsov
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Abstract

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>>1. At T=0 macroscopically superconductive state of the array with the lattice spacing b>>d is destroyed at g < g_c \approx 0.1 ln^2(b/d). At high temperatures the normal-state resistance between neighboring islands at b=b_c is much smaller than h/4e^2.

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M. V. Feigel'man, A. I. Larkin, M. A. Skvortsov. 2000-10-25. Quantum superconductor-metal transition in a proximity array. https://doi.org/10.1103/physrevlett.86.1869

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