Josephson effects in ferromagnetic superconductors: Noise effect due to critical spin fluctuations

T. Koyama, M. Tachiki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A theory for the Josephson effect in the ferromagnetic superconductors is presented. Taking account of critical fluctuations of the localized-spin magnetization, we calculate the magnetic field dependence of the maximum Josephson current and I-V characteristics. The Josephson current is reduced by a noise effect arising from the critical spin fluctuations at low temperatures. The anomalous behaviors observed in the dc Josephson effect in ErRh4B4-LuxOy-In junctions are interpreted on the basis of present theory.

Original languageEnglish
Pages (from-to)6463-6479
Number of pages17
JournalPhysical Review B
Volume30
Issue number11
DOIs
Publication statusPublished - 1984 Jan 1

ASJC Scopus subject areas

  • Condensed Matter Physics

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