A single electron tunncling (SET) approach to high-Tc superconductors

Authors :: Kubatkin, S.
Tzalenchuk, A.
Ivanov, Z.
Delsing, P.
Shekhter, R.
Claeson, T.
Source :: Czechoslovak Journal of Physics; April 1996, Vol. 46 Issue: Supplement 4 p2305-2306, 2p
Publication Year :: 1996
Abstract: Abstract: We report on fabrication of a Coulomb blockade electrometer based on an ultrasmall YBa<subscript>2</subscript>Cu<subscript>3</subscript>O<subscript>7-δ</subscript> (YBCO) island coupled by tunnel junctions to two gold electrodes. At temperatures below 0.5 K the low bias conductance was suppressed by the Coulomb blockade. The blockade could periodically, be varied by the gate potential. An external magnetic field of up to 5 T strongly influenced the transport via the island but did not change the period of the gate voltage dependence.