TL-CA-BA-CU-O STEP-EDGE JOSEPHSON-JUNCTIONS

被引：10

作者：

MARTENS, JS

ZIPPERIAN, TE

VAWTER, GA

GINLEY, DS

HIETALA, VM

TIGGES, CP

机构：

[1] Sandia National Laboratories, Albuquerque

来源：

APPLIED PHYSICS LETTERS | 1992年 / 60卷 / 09期

关键词：

D O I：

10.1063/1.107458

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

There has been considerable progress in the development of nonhysteretic Josephson junction microelectronic technologies for YBaCuO. Such a technology for Tl-Ca-Ba-Cu-O junctions would be interesting because of the higher operating temperatures and the very different grain boundary structures in the different cuprate superconductors. We have successfully made step-edge junctions with TlCaBaCuO grown on ion-milled LaAlO3. Nonhysteretic grain boundary-based junctions have been demonstrated with critical current-normal state resistance products exceeding 5 mV at 77 K, critical current densities ranging from 500 to 25 000 A/cm2, and critical current versus field profiles suggesting very uniform junctions. Yield has exceeded 70% on over 250 junctions tested and operation has been demonstrated to 100 K.

引用

收藏

页码：1141 / 1143

页数：3

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