COULOMB BLOCKADE AND INCOHERENT TUNNELING OF COOPER PAIRS IN ULTRASMALL JUNCTIONS AFFECTED BY STRONG QUANTUM FLUCTUATIONS

被引：70

作者：

KUZMIN, LS ^{[1
]}

NAZAROV, YV ^{[1
]}

HAVILAND, DB ^{[1
]}

DELSING, P ^{[1
]}

CLAESON, T ^{[1
]}

机构：

[1] CHALMERS UNIV TECHNOL,DEPT PHYS,S-41296 GOTHENBURG,SWEDEN

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.67.1161

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have fabricated and investigated submicron-size (0.01 and 0.04-mu-m2) Pb-alloy single Josephson junctions attached to high-resistance thin-film NiCr or Cr leads which provide the necessary conditions for a strong charging effect. When the Josephson coupling energy is less than the charging energy, we find a novel shape of the current-voltage curves, with a Coulomb gap at small voltages, and a current peak at larger voltages. A theory based on the concept of incoherent Cooper-pair tunneling has explained the data well.

引用

页码：1161 / 1164

页数：4

共 16 条

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