Coulomb blockade electrometer with a high-T c island

S. E. Kubatkin, Alexander Tzalenchuk, Z. G. Ivanov, P. Delsing, R. I. Shekhter, T. Claeson

Research output: Contribution to journalArticlepeer-review


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 languageEnglish
Pages (from-to)126
Issue number2
Publication statusPublished - 1996

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