DC SUPERCONDUCTING QUANTUM INTERFERENCE DEVICE OF YBA2CU3O7-X STEP-EDGE JUNCTIONS

被引：12

作者：

YOSHII, M

KITA, J

NAKATSU, O

YAMADA, Y

机构：

[1] Central Research Laboratory, Corporate R/D Operations, Shimadzu Corporation, Nakagyo-ku, Kyoto, 604

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1991年 / 30卷 / 4A期

关键词：

YBA2CU3O7-X THIN FILMS; RF MAGNETRON SPUTTERING; DC-SQUID; JOSEPHSON EFFECT;

D O I：

10.1143/JJAP.30.L587

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

DC superconducting quantum interference devices (DC-SQUIDs) are made of YBa2Cu3O7-x(YBCO) thin films by conventional photolithography and argon ion milling. The YBCO thin films are prepared on magnesia substrates with step edges by the rf magnetron sputtering method. The step-edge junctions for the SQUIDs exhibit clear DC and AC Josephson effects. The SQUIDs respond well to change of magnetic flux and have a white flux noise at 51.4 K of 8.1 x 10(-5) PHI-0/Hz1/2 at 1 Hz, 5.8 x 10(-5) PHI-0/Hz1/2 at 10 Hz and a noise increase at a low-frequency range of less than 10 Hz.

引用

页码：L587 / L589

页数：3

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