5. SUPERCONDUCTOR-METAL-INSULATOR TRANSITIONS: Quantum superconductor-metal transition in a proximity array
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 = hslash/e2 Rsquare gg 1. At T = 0 macroscopically superconductive state of the array with lattice spacing b gg d is destroyed at g < gc approx 0.1 ln2 (b/d). At high temperatures the normal-state resistance between neighboring islands at b = bc is much smaller than RQ = h/4e2.
- Publication:
-
Physics Uspekhi
- Pub Date:
- October 2001
- DOI:
- 10.1070/1063-7869/44/10S/S22
- Bibcode:
- 2001PhyU...44...99F