Universal relationship between giant magnetoresistance and anisotropic magnetoresistance in spin valve multilayers

B. H. Miller, Branko P. Stojković, E. D. Dahlberg

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We measure the giant magnetoresistance (GMR) with the current both parallel and perpendicular to the direction of the magnetization in the ferromagnetic (FM) layers and thus probe the anisotropy of the effective mean free paths for the spin-up and spin-down electrons, seen in the anisotropic magnetoresi stance. We find that the difference of the GMR in the two configurations, when expressed in terms of the sheet conductance, displays a nearly universal behavior as a function of GMR. On interpreting the results within the Boltzmann transport formalism we demonstrate the importance of bulk scattering for GMR.

Original languageEnglish (US)
Pages (from-to)294-298
Number of pages5
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume256
Issue number4
DOIs
StatePublished - 1999

Bibliographical note

Funding Information:
We wish to thank A. Balatsky for useful conversations. This work has been supported by the US Department of Energy and by the AFOSR under grant no. AF/FA9620-92-J-0185.

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