High efficiency electron spin polarization analyzer based on exchange scattering at FeW(001).
We report on a compact electron spin analyzer based on exchange scattering from a magnetic surface. The heart of the detector is an Fe(001) thin film grown on W(001) with chemisorbed oxygen in the p(1 x 1) structure. The device is mounted at the exit of an energy dispersive analyzer and works at a scattering energy of about 13.5 eV. Its figure of merit is 2 x 10(-3), combined with an excellent stability of more than 2 weeks in UHV.
Winkelmann
A
A
Max-Planck-Institut fur Mikrostrukturphysik, Weinberg 2, D-06120 Halle(Saale), Germany.
Hartung
D
D
Engelhard
H
H
Chiang
C-T
CT
Kirschner
J
J