AC JOSEPHSON EFFECT IN A SINGLE QUANTUM CHANNEL

被引：392

作者：

AVERIN, D

BARDAS, A

机构：

[1] Department of Physics, State University of New York at Stony Brook, New York

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.75.1831

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have calculated all the components of the current in a short one-dimensional channel between two superconductors for arbitrary voltages and transparencies D of the channel. We demonstrate that in the ballistic limit (D similar or equal to 1) the crossover between the quasistationary evolution of the Josephson phase difference phi at small voltages and transport by multiple Andreev reflections at larger voltages can be described as the Landau-Zener transition induced by finite reflection in the channel. For perfect transmission and vanishing energy relaxation rates the stationary current-phase relation is never recovered, and l(phi) = I-c\sin phi\2\sgn V for arbitrary small voltages.

引用

页码：1831 / 1834

页数：4

共 17 条

[1] SUPERCONDUCTING TUNNELING WITHOUT THE TUNNELING HAMILTONIAN .2. SUBGAP HARMONIC STRUCTURE [J].