High-speed operation of quasi-one junction superconducting quantum interference device based on high-Tc multilayer technology

被引：15

作者：

Sugiyama, H ^{[1
]}

Wakana, H ^{[1
]}

Adachi, S ^{[1
]}

Tarutani, Y ^{[1
]}

Tanabe, K ^{[1
]}

机构：

[1] Int Superconduct Technol Ctr, Superconduct Res Lab, Koto Ku, Tokyo 1350062, Japan

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 14期

关键词：

D O I：

10.1063/1.1690496

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We designed a quasi-one junction superconducting quantum interference device (QOS) based on single-flux-quantum technology using high-T-c superconductors. A circuit containing 10 interface-engineered ramp-edge Josephson junctions was fabricated on a La-substituted YBa2Cu3Oy ground plane. The output voltage as a function of the input current for the QOS indicated correct operation as a periodic comparator at clock frequency of 94 and 77 GHz at 35 and 40 K, respectively. A comparison of the observed maximum operating frequency with the product of the critical current and normal resistance for the junctions suggests that comparator operation above 100 GHz at 40 K is possible if one optimizes the junction parameters. (C) 2004 American Institute of Physics.

引用

页码：2587 / 2589

页数：3

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