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Phys Rev Lett. 2001 Apr 2;86(14):3124-7.

Persistent currents in mesoscopic connected rings.

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Centre de Recherches sur les Très Basses Températures, Grenoble, France.


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 l(straight phi). 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 a typical amplitude of 0.40+/-0.08 nA per ring. Direct comparison with measurements on the same rings but isolated is presented.

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