Resonance effect in the voltage state of intrinsic Josephson junction stacks with multiple tunneling channels

Tomio Koyama, Yukihiro Ota, Masahiko Machida

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We investigate the resonance effect caused by the Josephson-Leggett (JL) mode in intrinsic Josephson junction stacks (IJJs) formed by a stack of multigap superconducting layers. Such an IJJ system is expected to be realized in a single crystal of highly anisotropic iron-based superconductors with thick blocking layers. It is shown that the JL mode is resonantly excited by the Josephson oscillations in the voltage state with inhomogeneous electric-field distribution along the c axis. The resonance creates a steplike structure with a negative resistance region in the I-V characteristics.

Original languageEnglish
Article number220501
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number22
DOIs
Publication statusPublished - 2011 Jun 6

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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