One-Dimensional Superconductors

Abstract

We report here measurements of the excess fluctuation conductivity in one-dimensional Al samples. Because sample diameters were so small (typically, square cross sections ∼ 600 Å × 600 Å), we were able to measure excess conductivity over a temperature range much wider than previously possible. Good agreement with the Thompson-Maki theory is observed at temperatures $T<\mathrm{}1.3\mathrm{}{T}_c$. The recent theory due to Patton is also in qualitative agreement. Above $1.4T_c$ the data do not agree quantitatively with any theory.