Macroscopic quantum tunneling induced by a spontaneous field in intrinsic Josephson junctions

Y. Chizaki, H. Kashiwaya, S. Kashiwaya, T. Koyama, S. Kawabata

Research output: Contribution to journalArticlepeer-review

Abstract

We theoretically study macroscopic quantum tunneling (MQT) in capacitively coupled Josephson junctions in the case that one of the junctions is in the finite voltage state. We find that the system can be mapped into a one dimensional model with a spontaneous periodic perturbation and calculate the MQT rate by using the time-dependent WKB method. Then the MQT rate is found to be resonantly enhanced and the enhancement of MQT rate is found even off the resonant point.

Original languageEnglish
Pages (from-to)758-759
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume471
Issue number21-22
DOIs
Publication statusPublished - 2011 Nov 1

Keywords

  • Coupled Josephson junctions
  • Macroscopic quantum tunneling
  • WKB method

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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