CPP transport properties of Ni/Ru and Co90Fe10Cu interfaces

Do Kyun Kim, Yeon Sub Lee, Hoang Yen Thi Nguyen, Rakhi Acharyya, Reza Loloee, Kyung Ho Shin, Young Keun Kim, Byoung Chul Min, W. P. Pratt, Jack Bass

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Using current-perpendicular-to-plane (CPP) magnetoresistance measurements, we derive values of twice the enhanced interface resistance, 2AR F/N*, and the interface scattering asymmetry, γF/N, for the ferromagnetic/non-magnetic (F/N) pairs Ni/Ru and Co90Fe10Cu. For Ni/Ru, we find 2ARNi/Ru*= 1.7-0.3+0.4 Ω2, similar to the value for Fe/Cr, but we estimate γNi/Ru=0.15\pm 0.03, much smaller than the value for Fe/Cr or the asymmetry found for Ni(Ru) alloys. For Co 90Fe10 we find 2ARCoFe/Cu*=1.1\pm 0.2 and γCoFe/Cu=0.8\pm 0.1 , both similar to the values for Co/Cu.

Original languageEnglish
Article number5467633
Pages (from-to)1374-1377
Number of pages4
JournalIEEE Transactions on Magnetics
Volume46
Issue number6
DOIs
Publication statusPublished - 2010 Jun

Keywords

  • CPP transport
  • CoFe/Cu
  • Giant magnetoresistance
  • Interfaces
  • Ni/Ru

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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