Microwave-induced zero-current crossings in Bi2Sr2CaCu2O8+y intrinsic Josephson junctions

Takasada Shibauchi, Jun Hashimoto, Ken Ichi Fujita, Takao Watanabe, Azusa Matsuda, Minoru Suzuki

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Current-voltage characteristics in mesa-structured Bi2Sr2CaCu2O8+y intrinsic junctions under in-plane magnetic fields reveal zero-current crossings (ZCCs) when microwave is applied. From measurements with controlled number of junctions (N = 5-14), we find that the number of ZCCs is just N in total of positive and negative bias sides; half of the 2N branches observed without microwave. Unlike Shapiro steps, the voltage step increases with microwave amplitude. Such features can be explained by considering the charging effect of superconducting layers and the pinning of triangular Josephson vortex lattice.

Original languageEnglish
Pages (from-to)461-462
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume388-389
DOIs
Publication statusPublished - 2003 May 1
Eventproceedings of the 23rd international conference on low temper - Hiroshima, Japan
Duration: 2002 Aug 202002 Aug 27

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Keywords

  • Current-voltage characteristics
  • Intrinsic tunneling
  • Josephson vortex
  • Shapiro step

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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