TY  - JOUR
AU  - Ohwaki, T.
AU  - Wortmann, D.
AU  - Ishida, H.
AU  - Blügel, S.
AU  - Terakura, K.
TI  - Spin-polarized field emission from Ni(001) and Ni(111) surfaces
JO  - Physical review / B
VL  - 73
IS  - 23
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-57445
SP  - 235424
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000238696600146
DO  - DOI:10.1103/PhysRevB.73.235424
UR  - https://juser.fz-juelich.de/record/57445
ER  -