Critical current oscillations versus pureness of superconductor-ferromagnet nanoscopic multilayers

Serhii Shafranjuk*, John B Ketterson

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The influence of elastic electron scattering on nonmagnetic impurities in S/F multilayers to the oscillations of superconducting critical current J c and critical temperature T c versus the thickness of ferromagnetic layer d F is studied. Using the quasiclassical Green function approach, we compute the electron excitation spectrum in the electrodes of S/F multilayer for an arbitrary pureness τ i Δ (except the limit τ i ε F ≤, ℏ, ε F being the Fermi energy; τ i is the scattering time of electrons on nonmagnetic impurities). Using the same assumptions, we also derive expressions for J c and T c . The obtained results indicate that both the J c (d F ) and T c (d F ) dependencies are strongly affected by the electron elastic scattering in the electrodes.

Original languageEnglish (US)
Title of host publication2003 Nanotechnology Conference and Trade Show - Nanotech 2003
EditorsM. Laudon, B. Romanowicz
Pages174-177
Number of pages4
StatePublished - Dec 1 2003
Event2003 Nanotechnology Conference and Trade Show - Nanotech 2003 - San Francisco, CA, United States
Duration: Feb 23 2003Feb 27 2003

Publication series

Name2003 Nanotechnology Conference and Trade Show - Nanotech 2003
Volume2

Other

Other2003 Nanotechnology Conference and Trade Show - Nanotech 2003
CountryUnited States
CitySan Francisco, CA
Period2/23/032/27/03

Keywords

  • Ferromagnet-superconductor multilayers
  • Reentrant behavior

ASJC Scopus subject areas

  • Engineering(all)

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