Correlation between magnetism and spin-dependent transport in CoFeB alloys.
We report a correlation between the spin polarization of the tunneling electrons and the magnetic moment of amorphous CoFeB alloys. Such a correlation is surprising since the spin polarization of the tunneling electrons involves s-like electrons close to the Fermi level (E_{F}), while the magnetic moment mainly arises due to all the d electrons below E_{F}. We show that probing the s and d bands individually provides clear and crucial evidence for such a correlation to exist through s-d hybridization, and demonstrate the tunability of the electronic and magnetic properties of CoFeB alloys.
Paluskar
P V
PV
Department of Applied Physics, cNM, Eindhoven University of Technology, 5600 MB, The Netherlands.
Lavrijsen
R
R
Sicot
M
M
Kohlhepp
J T
JT
Swagten
H J M
HJ
Koopmans
B
B