Persistent currents in mesoscopic connected rings.
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.
Rabaud
W
W
Centre de Recherches sur les Très Basses Températures, Grenoble, France.
Saminadayar
L
L
Mailly
D
D
Hasselbach
K
K
Benoît
A
A
Etienne
B
B