Observation of Persistent Currents in Mesoscopic Connected Rings
W. Rabaud, L. Saminadayar, D. Mailly, K. Hasselbach, A. Benoit, B. Etienne
Abstract
We report measurements of the low temperature magnetic response of a line of 16 GaAs/GaAlAs connected mesoscopic rings whose total length is much larger than lϕ. Using an on-chip micro-squid technology, we have measured a periodic response, with period h/e, corresponding to persistent currents in the rings of typical amplitude 0.40 0.08 nA per ring. Direct comparison with measurements on the same rings but isolated is presented.
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