Towards a unified picture of spin dependent transport in and perpendicular giant magnetoresistance and bulk alloys

Shih-Ying Hsu, A. Barthélémy, P. Holody, R. Loloee, P. A. Schroeder, A. Fert

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

From data on Fe1 − x Vx/Cu/Co/Cu)N multilayers, we show that Fe doped with V gains a negative spin asymmetry for bulk scattering (β < 0), which, combined with the positive asymmetry of Co, accounts for the inverse current perpendicular to the plane (CPP) giant magnetoresistance (GMR) we observe. More precisely, the competition between positive and negative asymmetries for interface and bulk scatterings in FeV leads to inverse (normal) GMR for layers thicker (thinner) than a compensation thickness. The negative β of FeV is consistent with theoretical predictions and bulk alloy data. The current in the plane (CIP) GMR is not reversed, which illustrates the role of channeling in CIP.

Original languageEnglish
Pages (from-to)2652-2655
Number of pages4
JournalPhysical Review Letters
Volume78
Issue number13
DOIs
StatePublished - 31 Mar 1997

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