Shapiro step responses in the flux-flow state of Bi-2212 intrinsic Josephson junctions with cooperation of pancake vortices

Yasuyuki Yamada, Kensuke Nakajima, Takashi Yasuda, T. Yamashita, Koji Nakajima

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Flux-flow properties of one-dimensionally long Bi-2212 intrinsic Josephson junction stacks are studied. Quasioptically irradiated millimeter waves drives Josephson vortices and reveals current steps in equal voltage intervals corresponding to the Josephson relation. Differential conductance properties and the power dependence of the current step height are also measured. The experimental results indicate that the responses are consistent with the Shapiro step. Periodic potentials produced by pancake vortices are considered to be effective to realize the in-phase collective motion of the Josephson vortices.

Original languageEnglish
Pages (from-to)1028-1031
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume15
Issue number2 PART I
DOIs
Publication statusPublished - 2005 Jun

Keywords

  • High-T superconductors
  • Intrinsic Josephson junctions
  • Josephson effects
  • Shapiro step

ASJC Scopus subject areas

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

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