GMR in magnetic multilayers from a first principles band structure Kubo-Greenwood approach
Journal Article
·
· IEEE Transactions on Magnetics
- Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy
The authors employ the Kubo-Greenwood formula to investigate from first-principles the giant magnetoresistance in Fe{sub m}M{sub n} (M = V, Cr, 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.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-88ER45372
- OSTI ID:
- 649511
- Report Number(s):
- CONF-980102--
- Journal Information:
- IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 4Pt1 Vol. 34; ISSN IEMGAQ; ISSN 0018-9464
- Country of Publication:
- United States
- Language:
- English
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