期刊
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
卷 24, 期 4, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/0953-2048/24/4/045008
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资金
- ESF
- European Community
We have extended the off-axis biepitaxial technique to produce YBCO grain boundary junctions on low loss substrates. Excellent transport properties have been reproducibly found, with remarkable values of the quality factor IcRn (with I-c the critical current and R-n the normal state resistance) above 10 mV, far higher than the values commonly reported in the literature for high temperature superconductor (HTS) based Josephson junctions. The outcomes are consistent with a picture of a more uniform grain boundary region along the current path. This work supports a possible implementation of grain boundary junctions for various applications including terahertz sensors and HTS quantum circuits in the presence of microwaves.
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