Journal Article

PreJuSER-57445

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spin-polarized field emission from Ni(001) and Ni(111) surfaces

Ohwaki, T. ; Wortmann, D.FZJ* ; Ishida, H. ; Blügel, S.FZJ* ; Terakura, K.

2006
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/7700  doi:10.1103/PhysRevB.73.235424

Abstract: Results are presented of a first-principles calculation of the spin-polarized field emission from ferromagnetic Ni(111) and Ni(001) surfaces. The electronic structure of both surfaces exposed to an external field is determined by combining the surface-embedded Green function approach and the full-potential linearized augmented plane-wave (FLAPW) method within the local spin density approximation. We discuss the contributions of different states to the field-emission current. In particular, we show that delocalized states make similar contributions to that obtained at jellium surfaces while localized Ni d states contribute mostly through surface states and resonances. These contributions dominate in the minority spin and lead to a negative spin polarization of the emitted current.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Research Program(s):

1. Kondensierte Materie (P54)

Appears in the scientific report 2006
Notes: Nachtrag

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