Observation of the conduction electron spin polarization in the Ag spacer of a Fe/Fg/Fe trilayer.
The spatially oscillating electron spin polarization in the Ag spacer of a 4 nm Fe/20 nmAg/4 nm Fe(001) epitaxial trilayer has been determined by means of low energy muon spin rotation. It oscillates with the same period as the interlayer exchange coupling, but shows a much weaker attenuation at large distances x from the interface. The measured magnetization profile from the inner 14 nm of the spacer is described by an oscillating polarization decaying as x(-0.8(1)). This unusual behavior may arise from a full confinement of electron states within the spacer.
Luetkens
H
H
Institut für Metallphysik und Nukleare Festkörperphysik, TU Braunschweig, D-38106 Braunschweig, Germany. hurbertus.luetkens@psi.ch
Korecki
J
J
Morenzoni
E
E
Prokscha
T
T
Birke
M
M
Glückler
H
H
Khasanov
R
R
Klauss
H-H
HH
Slezak
T
T
Suter
A
A
Forgan
E M
EM
Niedermayer
Ch
Ch
Litterst
F J
FJ