Josephson effect in MgB2/Ag/MgB2 step-edge junctions

被引：13
|
作者：
Kye, JI [1 ]
Lee, HN [1 ]
Park, JD [1 ]
Moon, SH [1 ]
Oh, B [1 ]
机构：
[1] LG Elect Inst Technol, Seoul 137724, South Korea
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2003年 / 13卷 / 02期
关键词：
Josephson effect; MgB2; SNS junction; superconductor; thin film;
D O I：
10.1109/TASC.2003.814159
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 made MgB2/Ag/MgB2 junctions using the steps formed on Al2O3(0001) substrates. The current-voltage characteristics of these superconductor-normal-superconductor (SNS) type Josephson junctions have shown nonhysteretic behavior with some excess current. The measured IcRn values were 1.2 mV at 4.2 K and 0.24 mV at 20 K. We have observed the modulation of critical current under dc magnetic field as well as Shapiro steps under 20 GHz microwave irradiation.
引用
收藏
页码：1075 / 1078
页数：4
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