Abstract
Magnetoresistance measurements have been performed on thin cylindrical Ag films (diameter \ensuremath{\approxeq}1.2 \ensuremath{\mu}m) between 1.3 and 4.2 K, in order to investigate the Aharonov-Bohm effect. The measurements were analyzed in terms of the recent theories of two-dimensional weak electron localization. The observed oscillations in the magnetoresistance are periodic in the magnetic flux quantum h/2e and in excellent agreement with the Altshuler-Aronov-Spivak theory. Fourier analysis of the data was used to study the oscillatory behavior in detail. From the dependence of the magnetoresistance on temperature and magnetic field, values of the phase-breaking time ${\ensuremath{\tau}}_{\ensuremath{\varphi}}$ and of the spin-orbit scattering time ${\ensuremath{\tau}}_{\mathrm{s}.\mathrm{o}.}$ were obtained.
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