TUNNELING MEASUREMENTS ON SUPERCONDUCTOR INSULATOR SUPERCONDUCTOR JUNCTIONS USING SINGLE-CRYSTAL YBA2CU3O7-X THIN-FILMS

被引：83

作者：

HIRATA, K

YAMAMOTO, K

IIJIMA, K

TAKADA, J

TERASHIMA, T

BANDO, Y

MAZAKI, H

机构：

[1] RES INST PROD DEV,KYOTO 606,JAPAN

[2] KYOTO UNIV,INST CHEM RES,UJI,KYOTO 611,JAPAN

[3] NATL DEF ACAD,DEPT MATH & PHYS,YOKOSUKA,KANAGAWA 239,JAPAN

来源：

APPLIED PHYSICS LETTERS | 1990年 / 56卷 / 07期

关键词：

D O I：

10.1063/1.103311

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have, for the first time, made quasi-particle tunneling measurements on a YBa2Cu3O7-x(001)/Y2O3 (001)/YBa2 Cu3 O7-x (001)junction, which was epitaxially grown on a MgO(100) substrate in an in-situ process. Both layers of YBa2 Cu3 O7-x showed the same superconducting transition of Tc end =86 K with ΔT(R=10-90%)=1.5 K. Quasi-particle tunneling in the direction perpendicular to the Cu-O planes was measured. A gap parameter Δ(4.5 K) of 9.0±0.2 meV and a value of 2Δ/kTc of 3.5+0.4-0.6 were obtained.

引用

页码：683 / 685

页数：3

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