Theory of 0-π transition in a superconductor/ferromagnet/superconductor junction

Shin ichi Hikino, Michiyasu Mori, Saburo Takahashi, Sadamichi Maekawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We study the 0-π transition by taking into account magnetic scattering in a dirty ferromagnet (FM). Using the fourth order perturbation theory for the tunneling Hamiltonian and Green's function method, we formulate the Josephson effect in a SC/FM/SC junction, where SC is a superconductor. It is found that Josephson critical current shows the damped oscillation as a function of the thickness of the ferromagnet and the 0-π transition occurs. Moreover, it is found that the 0-π transition occurs by changing temperature due to the magnetic scattering.

Original languageEnglish
Pages (from-to)2456-2458
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 3
DOIs
Publication statusPublished - 2007 Mar 1

Keywords

  • Ferromagnet
  • Josephson effect
  • Nanostructure
  • Superconductor
  • Tunnel junction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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