RF-Current Effects on Intrinsic Josephson Junctions

被引：1
|
作者：
Saleem, Sajid [1 ]
Fenton, Jon C. [1 ]
Korsah, Michael [2 ]
Speller, Susannah [2 ]
Grovenor, Chris R. M. [2 ]
Warburton, Paul A. [1 ]
机构：
[1] UCL, London Ctr Nanotechnol, London WC1H 0AH, England
[2] Univ Oxford, Dept Mat, Oxford OX1 3PH, England
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2009年 / 19卷 / 03期
基金：
英国工程与自然科学研究理事会;
关键词：
Josephson arrays; Josephson oscillators; Josephson vortex flow;
D O I：
10.1109/TASC.2009.2019226
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We have fabricated intrinsic Josephson junction arrays using Tl2Ba2CaCu2O8 thin films. The junctions have dimensions of order 1 mu m(2) and therefore high slope resistance in the range 1 k Omega to 10 k Omega 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.
引用
收藏
页码：734 / 736
页数：3
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