SINGLE COOPER-PAIR TUNNELING IN SMALL-CAPACITANCE JUNCTIONS

被引：79

作者：

GEERLIGS, LJ

ANDEREGG, VF

ROMIJN, J

MOOIJ, JE

机构：

[1] Department of Applied Physics, Delft University of Technology, 2600 GA Delft

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.65.377

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present observations of charging effects for Cooper pairs in short linear arrays of small-capacitance Josephson junctions. Current-voltage characteristics show a Coulomb gap for Cooper-pair tunneling when the charging energy exceeds the Josephson coupling energy. In a double junction a zero-voltage current is observed that is modulated by a gate voltage applied to the metal island between the junctions. For longer arrays a crossover from Coulomb blockade of Cooper-pair tunneling to a supercurrent is observed when the ratio of Josephson coupling to charging energy is increased. © 1990 The American Physical Society.

引用

页码：377 / 380

页数：4

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