GMR in magnetic multilayers from a first principles band structure kubo-greenwood approach

Fangyi Rao, Arthur J Freeman

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Abstract

We employ the Kubo-Greenwood formula to investigate from first-principles the giant magnetoresistance in FemMn (M=V, Or, Mn and Cu) superlattices. The results indicate that MR can arise from band structure changes from ferromagnetic to anti-ferromagnetic alignments. Quantum confinement in the perpendicular direction is induced by the potential steps between the Fe and spacer layers and causes a much larger MR in the current-perpendicular-to-the-plane (CPP) geometry than in the current-in-plane (CIP) geometry. In the presence of the spin-orbit coupling interaction, MR is found to be reduced by spin-channel mixing.

Original languageEnglish
Pages (from-to)930-932
Number of pages3
JournalIEEE Transactions on Magnetics
Volume34
Issue number4 PART 1
DOIs
Publication statusPublished - 1998

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

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