Coulomb blockade electrometer with a high-T c island. / Kubatkin, S. E.; Tzalenchuk, Alexander; Ivanov, Z. G.; Delsing, P.; Shekhter, R. I.; Claeson, T.

In: JETP LETTERS, Vol. 63, No. 2, 1996, p. 126.

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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 languageEnglish
Pages (from-to)126
JournalJETP LETTERS
Volume63
Issue number2
Publication statusPublished - 1996

ID: 17062005