Observation of Persistent Currents in Mesoscopic Connected Rings
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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