SUPERCONDUCTOR-INSULATOR SUPERCONDUCTOR QUASI-PARTICLE TUNNELING CURRENT IN BA1-XKXBIO3 GRAIN-BOUNDARY JUNCTIONS ON SRTIO3 BICRYSTAL SUBSTRATES

被引：7

作者：

YAMAMOTO, T

SUZUKI, S

TAKAHASHI, K

YOSHISATO, Y

MAEKAWA, S

机构：

[1] Tsukuba Research Center, SANYO Electric Co., Ltd., 2-1, Koyadai, Tsukuba

来源：

APPLIED PHYSICS LETTERS | 1995年 / 66卷 / 08期

关键词：

D O I：

10.1063/1.113585

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have prepared Ba1-xKxBiO3 grain-boundary junctions on SrTiO3 bicrystal substrates and observed the quasiparticle tunneling current for a superconductor-insulator-superconductor (SIS) junction. The current-voltage (I-V) characteristics were investigated by using a gap-energy distribution model to consider the effect of the inhomogeneity of Δ at the grain-boundary junction interface. The broadening of the I-V characteristics around the gap voltage of a SIS junction and its temperature dependence could be explained by assuming the Gaussian distribution of gap energies with Δ0(0)=3.8 meV and δΔ=0.8 meV, where Δ0(0) and δΔ denoted the mean value and variance of the distribution, respectively.© 1995 American Institute of Physics.

引用

页码：1000 / 1002

页数：3

共 10 条

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