Abstract
We report on a successful attempt to fabricate a Coulomb blockade electrometer consisting of an ultrasmall YBa 2Cu 3O 7-delta (YBCO) island coupled to two gold electrodes through a high-resistance native surface tunnel barrier, a third electrode placed near the island was used as an electrostatic gate, spectra typical for tunneling into the YBCO superconductor were reproducibly measured, at temperatures below 0.5 K the low-bias conductance was suppressed by the Coulomb blockade, the blockade could be periodically varied by the gate potential, an external magnetic field of up to 5 T strongly influenced the transport via the island but without any change in the period of the Coulomb oscillations
Original language | English |
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Pages (from-to) | 126 |
Journal | JETP LETTERS |
Volume | 63 |
Issue number | 2 |
Publication status | Published - 1996 |