Temperature Dependence of Giant Magnetoresistance in Co/Cu Superlattices

Yoshiaki Saito, Koichiro Inomata, Shinya Uji, Taichi Terashima, Haruyoshi Aoki

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

The temperature (T) dependence of the resistivity of Co/Cu superlattices having antiferromagnetic (AF) and ferromagnetic (F) interlayer exchange coupling was investigated. The results show that the resistivity versus temperature relationship exhibits a minimum for AF-coupled Co/Cu superlattices while that for F-coupled Co/Cu superlattices dose not. This minimum can be explained by the T dependences of the magnetoresistance (MR) and saturation resistivity, which behave as Tn power laws for T dependence of MR at low temperatures. The power laws for T dependences of MR are related to the two-dimensional (2D) behavior due to the weak interlayer exchange coupling and to the T dependence of the magnetization.

Original languageEnglish
Pages (from-to)1263-1267
Number of pages5
Journaljournal of the physical society of japan
Volume63
Issue number4
DOIs
Publication statusPublished - 1994
Externally publishedYes

Keywords

  • interfacial scattering
  • interlayer exchange coupling
  • magnetoresistance
  • magnon
  • superlattices
  • temperature dependence

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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