Abstract: | We report measurements of the temperature dependence of the amplitude of phase-periodic conductance oscillations in disordered
normal metal (Ag) structures, attached to a superconducting (Al) wire at two points. The amplitude of oscillations reaches
its maximum at temperatureT
*, when the Thouless energy is of the order ofk
B
T. The results are in agreement with recent calculations by Nazarov and Stoof Phys. Rev. Lett. 76 (1996) 823]. |