Observation of Persistent Currents in Mesoscopic Connected Rings

Details Observation of Persistent Currents in Mesoscopic Connected Rings Observation of Persistent Currents in Mesoscopic Connected Rings

2000-07-25

arxiv.org/abs/cond-mat/0007396v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Revised version of the paper cond-mat/0007396. Also available on request in any format

Scientific paper

10.1103/PhysRevLett.86.3124

We report measurements of the low temperature magnetic response of a line of 16 GaAs/GaAlAs \emph{connected} mesoscopic rings whose total length is much larger than $l_{\phi}$. Using an on-chip micro-\textsc{squid} technology, we have measured a periodic response, with period $h/e$, corresponding to persistent currents in the rings of typical amplitude $0.40\pm 0.08 nA$ per ring. Direct comparison with measurements on the same rings but \emph{isolated} is presented.

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