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RF-current effects on intrinsic Josephson junctions

Saleem, S; Fenton, JC; Korsah, M; Grovenor, CRM; Warburton, PA; (2009) RF-current effects on intrinsic Josephson junctions. IEEE Transactions on Applied Superconductivity , 19 (3) 734 - 737. 10.1109/TASC.2009.2019226. Green open access

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Abstract

We have fabricated intrinsic Josephson junction arrays using Tl2Ba2CaCu2O8 thin films. The junctions have dimensions of order 1 mum2 and therefore high slope resistance in the range 1 kOmega to 10 kOmega per junction on the quasiparticle branches. We have irradiated the junctions with microwaves at a frequency of 6.37 GHz. We observe both microwave-induced vortex-flow branches and strong suppression of the switching current but only when no junctions are in the voltage state. We attribute this observation to the shunting of the high-resistance junctions by the environmental impedance, and discuss the significance of this result for the application of intrinsic junctions as THz sources and qubits.

Type: Article
Title: RF-current effects on intrinsic Josephson junctions
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/TASC.2009.2019226
Publisher version: http://dx.doi.org/10.1109/TASC.2009.2019226
Language: English
Additional information: © 2009 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/152822
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