Experimental observation of persistent currents in GaAs-AlGaAs single loop
- 29 March 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 70 (13) , 2020-2023
- https://doi.org/10.1103/physrevlett.70.2020
Abstract
We report measurements of the magnetic response of a GaAlAs/GaAs mesoscopic ring. We have developed a dedicated SQUID technique where sample and SQUID are on the same chip. We have detected a periodic signal, with a period h/e, which is the signature of a persistent current with an amplitude 4±2 nA, in good agreement with current theories.Keywords
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