SINGLE AND STACKED JOSEPHSON-JUNCTIONS BASED ON C-AXIS YBCO/PBCO MULTILAYERS

被引：7

作者：

BARI, MA

GHYSELEN, B

TARTE, EJ

SOMEKH, RE

YAN, Y

EVETTS, JE

BLAMIRE, MG

CHEW, NG

HUMPHREYS, RG

机构：

[1] UNIV CAMBRIDGE,IRC SUPERCONDUCT,CAMBRIDGE,ENGLAND

[2] DRA MALVERN,MALVERN,WORCS,ENGLAND

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1995年 / 5卷 / 02期

关键词：

701.1 Electricity: Basic Concepts and Phenomena - 701.2 Magnetism: Basic Concepts and Phenomena - 708.3 Superconducting Materials - 708.3.1 High Temperature Superconducting Materials - 804.2 Inorganic Compounds - 933.1 Crystalline Solids and Crystallography;

D O I：

10.1109/77.403062

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：

Using Whole Wafer superconducting device technology we have fabricated vertically stacked sandwich junctions with c-axis oriented YBCO/PBCO/YBCO trilayers and double barrier junctions. The resulting devices exhibit supercurrents through PBCO thicknesses of up to 130 nm at 4.2K. We have observed RSJ-like I-V curves, Shapiro steps and almost Fraunhofer-like dependence of the critical current as a function of magnetic field. The scaling behavior of devices fabricated on perovskite (SrTiO3 and LaAlO3) and MgO substrates differ. The results indicate a certain uniformity for the barriers on the scale of the size of the junction. We propose different mechanisms for supercurrent and quasiparticle transport through the PBCO barrier for the two substrate types.

引用

页码：2369 / 2372

页数：4

共 14 条

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