Direct Observation of Ensemble Averaging of the Aharonov-Bohm Effect in Normal-Metal Loops

Author(s)

C. P. Umbach
C. Van Haesendonck
R. B. Laibowitz
S. Washburn
Richard A. Webb, University of South Carolina - ColumbiaFollow

Document Type

Article

Abstract

Aharonov-Bohm magnetoconductance oscillations have been measured in series arrays of 1, 3, 10, and 30 submicron-diameter Ag loops. At constant temperature, the amplitude of the h/e oscillations is observed to decrease as the square root of number of loops, while the amplitude of h/2e conductance oscillations, measured in the same samples, is independent of the number of series loops. This is direct confirmation of the ensemble averaging properties of h/e oscillations in multiloop systems. The amplitude of the h/e oscillations is in good agreement with recent calculations.

Publication Info

Published in Physical Review Letters, ed. Gene D. Sprouse, Volume 56, Issue 4, 1986, pages 386-389.

Umbach, C. P., Van Haesendonck, C., Laibowitz, R. B., Washburn, S., Webb, R. A. (1986). Direct observation of ensemble averaging of the Aharonov-Bohm effect in normal-metal loops. Physical Review Letters, 56(4), 386-389. DOI: 10.1103/PhysRevLett.56.386

© Physical Review Letters, 1986, American Physical Society