HYSTERETIC JOSEPHSON-JUNCTIONS FROM YBA2CU3O7-X/SRTIO3/BA1-XKXBIO3 TRILAYER FILMS

被引：29

作者：

FINK, RL

THOMPSON, M

HILBERT, C

KROGER, H

机构：

[1] Microelectronics and Computer Technology Corporation (MCC), Austin

来源：

APPLIED PHYSICS LETTERS | 1992年 / 61卷 / 05期

关键词：

D O I：

10.1063/1.107847

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have fabricated hysteretic Josephson junctions from YBCO/SrTiO3/BKBO trilayer films. These large area rf-sputtered junctions are reproducible, show Shapiro steps in response to microwave radiation, and their Josephson current can be modulated with a small magnetic field up to about 20 K. In addition, geometrical and magnetic field dependent resonances were observed for the first time in cuprate superconductor junctions. The devices appear to be S-N-S like without any gap structures discernable in the electrical characteristics. The decay length of critical current with SrTiO3 layer thickness indicates a normal-state coherence length in the SrTiO3 of about 5 angstrom.

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页码：595 / 597

页数：3

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