Y. Koyama et al., FLUCTUATIONS OF THE DC JOSEPHSON CURRENT IN A SUPERCONDUCTOR-NORMAL CONDUCTOR-SUPERCONDUCTOR JUNCTION, Journal of the Physical Society of Japan, 64(5), 1995, pp. 1466-1470
We study mesoscopic fluctuations of the de Josephson effect in a super
conductor-dirty normal conductor-superconductor junction using the Gre
en function method. Our theoretical approach is valid if the pair pote
ntial is considerably higher than the Thouless correlation energy. The
effects of temperature and sample geometry are taken into account. Th
e calculated result is in fairly good agreement with that of the recen
t experiment by Takayanagi et al.