2005, English, Article, Journal or magazine article edition: Characteristics of strong ferromagnetic Josephson junctions with epitaxial barriers Bell, Chris; Loloee, R.; Burnell, Gavin; ...

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Bookmark: http://trove.nla.gov.au/version/70514
Physical Description
  • 231515 bytes, application/​pdf
  • Preprint
Published
  • 2005-06-10T15:13:37Z
Language
  • English

Edition details

Title
  • Characteristics of strong ferromagnetic Josephson junctions with epitaxial barriers
Author
  • Bell, Chris
  • Loloee, R.
  • Burnell, Gavin
  • Blamire, Mark
Published
  • 2005-06-10T15:13:37Z
Physical Description
  • 231515 bytes, application/​pdf
  • Preprint
Subjects
Notes
  • We present the measurement of superconductor /​ ferromagnetic Josephson junctions, based on an epitaxial Nb bottom electrode and epitaxial Fe20Ni80 barrier. Uniform junctions have been fabricated with a barrier thicknesses in the range 2-12 nm. The maximum critical current density ~ 2.4 \pm 0.2 * 10^9 Am^-2 was found for a devices with a 3 nm thick barrier at 4.2 K, corresponding to an average characteristic voltage I_C R_N ~ 16 \muV. The I_C R_N showed a non-monotonic behavior with Fe20Ni80 thickness. The variation of the resistance of a unit area AR_N, of the junctions with barrier thickness gave a Nb/​Py specific interface resistance of 6.0 \pm 0.5 f\Omega m^2 and Fe20Ni80 resistivity of 174 \pm 50 n\Omega m, consistent with other studies in polycrystalline samples.
  • cond-mat;0502537
Language
  • English
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