Effect of zero point phase fluctuations on Josephson tunneling

被引：49

作者：

Ingold, GL

Grabert, H

机构：

[1] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany

[2] Ctr Etud Saclay, CEA, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France

[3] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.83.3721

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In the presence of phase fluctuations the de Josephson effect is modified and the supercurrent at zero voltage is replaced by a peak at small but finite voltages, it is shown that at zero temperature this peak is determined by two complementary expansions of finite radius of convergence. The leading order expressions are related to results known from the regimes of Coulomb blockade and of macroscopic quantum tunneling. The peak positions and the suppression of the critical current by quantum fluctuations are discussed.

引用

页码：3721 / 3724

页数：4

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