Macroscopic quantum effects in intrinsic Josephson junction stacks

被引：2
|
作者：
Koyama, T. [1 ,3 ]
Machida, M. [2 ,3 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[2] Japan Atom Energy Agcy, CCSE, Tokyo 1100015, Japan
[3] JST CREST, Kawaguchi, Saitama 3320012, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2008年 / 468卷 / 15-20期
关键词：
MQT; intrinsic Josephson junctions; capacitively-coupled intrinsic Josephson; junction model;
D O I：
10.1016/j.physc.2008.05.161
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A macroscopic quantum theory for the capacitively-coupled intrinsic Josephson junctions (IJJ's) is constructed. We clarify the multi junction effect for the macroscopic quantum tunneling (MQT) to the first resistive branch. It is shown that the escape rate is greatly enhanced by the capacitive coupling between junctions. We also discuss the origin of the N-2-enhancement in the escape rate observed in the uniformly switching in Bi-2212 IJJ's. (c) 2008 Published by Elsevier B.V.
引用
收藏
页码：1913 / 1915
页数：3
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