%0 Journal Article
%A Ohwaki, T.
%A Wortmann, D.
%A Ishida, H.
%A Blügel, S.
%A Terakura, K.
%T Spin-polarized field emission from Ni(001) and Ni(111) surfaces
%J Physical review / B
%V 73
%N 23
%@ 1098-0121
%C College Park, Md.
%I APS
%M PreJuSER-57445
%P 235424
%D 2006
%Z Record converted from VDB: 12.11.2012
%X 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.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000238696600146
%R 10.1103/PhysRevB.73.235424
%U https://juser.fz-juelich.de/record/57445