MICROWAVE HETERODYNE MIXING BY STEP-EDGE MICROBRIDGE JOSEPHSON-JUNCTIONS USING YBACUO THIN-FILMS

被引：15

作者：

FUKUMOTO, Y

KAJIKAWA, H

OGAWA, R

KAWATE, Y

机构：

[1] Superconducting and Cryogenic Technology Center, Kobe Steel Ltd, Nishi-ku, Kobe, HYOGO, 651-22

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1991年 / 30卷 / 12B期

关键词：

MICROWAVE; HETERODYNE MIXING; JOSEPHSON JUNCTION; YBACUO; OFF-AXIS SPUTTERING;

D O I：

10.1143/JJAP.30.3907

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Current-voltage characteristics and microwave mixing properties of step-edge microbridge Josephson junctions (SEJJs) made of YBaCuO thin films were systematically investigated. The step-edge was formed on the surface of a MgO(100) substrate employing the common photolithograph and wet-etching techniques. YBaCuO thin film was deposited by the off-axis sputtering method, and the microbridge junctions were fabricated so as to cross the step-edge. The SEJJs showed typical DC and AC characteristics which were explained by the resistively shunted junction (RSJ) model. Mixing experiments were carried out in the K-band microwave region. An intermediate frequency (IF) output with the frequency range of 20 MHz approximately 2.0 GHz was successfully obtained.

引用

页码：3907 / 3910

页数：4

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