Origin of the spin-asymmetry of hot-electron transmission in Fe
Physical Review B - Condensed Matter and Materials Physics, ISSN: 1098-0121, Vol: 76, Issue: 14
2007
- 11Citations
- 9Captures
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Article Description
Using the technique of ballistic electron magnetic microscopy, we have studied the spin-asymmetry of transmission of hot electrons in Fe, for which a recent ab initio calculation has shown that the inelastic lifetime is similar for majority and minority spin. Nevertheless, using a spin-valve structure of Ni81 Fe19 Au Fe, we find that the attenuation length of hot electrons in Fe at 1.2-1.6 eV is a factor of 4 larger for the majority spin. We argue that this large spin-asymmetry arises from the spin dependence of the group velocity, rather than the lifetime. © 2007 The American Physical Society.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=35649002083&origin=inward; http://dx.doi.org/10.1103/physrevb.76.140407; https://link.aps.org/doi/10.1103/PhysRevB.76.140407; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.76.140407/fulltext; http://link.aps.org/article/10.1103/PhysRevB.76.140407
American Physical Society (APS)
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