Magnetic response of a single, isolated gold loop
Venkat ChandrasekharIBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598R. A. WebbIBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598Michael BradyIBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598M. B. KetchenIBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598W. J. GallagherIBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598A. W. KleinsasserIBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598
1991en
ABI
Abstract
Measurements have been made of the low-temperature magnetic response of single, isolated, micron-size Au loops. The magnetic response is found to contain a component which oscillates with the applied magnetic flux with a fundamental period of ${\mathrm{\ensuremath{\Phi}}}_{0}$=h/e. The amplitude of the oscillatory component corresponds to a persistent current of \ensuremath{\simeq}(0.3--2.0)${\mathit{ev}}_{\mathit{F}}$/L, 1 to 2 orders of magnitude larger than predicted by current theories.
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Cited by 30 references