Dependence of Coulomb blockade in ultrasmall single tunnel junctions on tunnel resistance

被引：0

作者：

Shimazu, Y

Ikehata, S

Kobayashi, S

机构：

[1] Department of Physics, Graduate School of Science, University of Tokyo, Tokyo 113, Hongo, Bunkyo-ku

来源：

PHYSICA B-CONDENSED MATTER | 1996年 / 227卷 / 1-4期

关键词：

Coulomb blockade; tunnel junction; superconductor-insulator transition;

D O I：

10.1016/0921-4526(96)00370-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We studied small-capacitance single tunnel junctions with various tunnel resistances. In order to reduce the environmental effect, high-resistance leads were adopted for measurement. We observed the gradual weakening and disappearance of the Coulomb blockade as the tunnel resistance in the absence of charging effects is lowered below the resistance quantum. As the tunnel resistance increases above the resistance quantum, the zero-bias resistance divided by the tunnel resistance tends to flatten off. The experimental result is in good agreement with the theory of Brown and Simanek.

引用

页码：102 / 104

页数：3

共 6 条

[1] COULOMB BLOCKADE OF SINGLE-ELECTRON TUNNELING, AND COHERENT OSCILLATIONS IN SMALL TUNNEL-JUNCTIONS [J].