OBSERVATION OF THE COULOMB BLOCKADE OF COOPER PAIR TUNNELING IN SINGLE JOSEPHSON-JUNCTIONS

被引：32

作者：

HAVILAND, DB ^{[1
]}

KUZMIN, LS ^{[1
]}

DELSING, P ^{[1
]}

CLAESON, T ^{[1
]}

机构：

[1] MV LOMONOSOV STATE UNIV,DEPT PHYS,CRYOELECTR LAB,MOSCOW 119899,USSR

来源：

EUROPHYSICS LETTERS | 1991年 / 16卷 / 01期

关键词：

D O I：

10.1209/0295-5075/16/1/018

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Measurements of single aluminum tunnel junctions of small area (0.01-mu-m2), which have high-resistance leads located very close to the tunnel junction, show evidence for the Coulomb blockade of Cooper pair tunnelling. The blockade appears as a voltage, below which a Josephson-like current is suppressed. This blockade voltage increases as the Josephson coupling energy is reduced by an external magnetic field. Finite-temperature effects on the I-V curve are seen down to about 100 mK. These observations can be explained within the scope of the semiclassical theory of tunnelling in ultrasmall junctions, where the effect of the electromagnetic environment is considered.

引用

页码：103 / 108

页数：6

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