Interface, Volume, and Thermal Attenuation of Hot Electron Spins in Ni80Fe20 and Co

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Vlutters, R. and Erve van 't, O.M.J. and Kim, S.D. and Jansen, R. and Lodder, J.C. (2002) Interface, Volume, and Thermal Attenuation of Hot Electron Spins in Ni80Fe20 and Co. Physical Review Letters, 88 (2). 027202-1-027202-4. ISSN 0031-9007

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Abstract:The relative importance of interface, volume, and thermal scattering in spin-dependent hot-electron transmission of magnetic trilayers is quantified. While interfaces produce significant attenuation (factor 2.2 per interface), the spin asymmetry is dominated by volume scattering. Extracted thermal attenuation lengths (130 ¿ at 300 K for Ni80Fe20) show that thermal spin-wave scattering is stronger than hitherto assumed. This suggests that spontaneous spin-wave emission, rather than the details of the spin-dependent band structure, may cause the strong filtering of minority hot-electron spins.
Item Type:Article
Copyright:© 2002 The American Physical Society
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Link to this item:http://purl.utwente.nl/publications/44242
Official URL:http://dx.doi.org/10.1103/PhysRevLett.88.027202
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