CHARACTERISTICS OF YBCO STEP-EDGE WEAK LINKS AND SQUIDS

被引：10

作者：

Kuriki, S. ^{[1
]}

Kamiyama, T. ^{[1
]}

Suzuki, D. ^{[1
]}

Matsuda, M. ^{[2
]}

机构：

[1] Hokkaido Univ, Res Inst Elect Sci, Sapporo, Hokkaido 060, Japan

[2] Electrotech Lab, 1-1-4 Umezono, Tsukuba, Ibaraki 305, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1993年 / 3卷 / 01期

关键词：

D O I：

10.1109/77.233954

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 step-junction and bicrystaljunction SQUIDs using YBCO films that were deposited respectively on etched step on ( 100) MgO substrates and ( 100) SrTiO3 bicrystal substrates of 38.4 degrees tilt angle. Distinct differences of I-V and noise characteristics between two types of SQUID were observed. The I-V characteristics for the step SQUID have finite excess current, while those for the bicrystal SQUID are of RSJ type. The low frequency noise of llf behavior is much lower in the step SQUID than the bicrystal SQUID. The white noise level of 1X10(-5)Phi(o)/Hz(1/2) a bout 60K was obtained in both SQUIDs.

引用

页码：2461 / 2464

页数：4

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