Determination of the spin polarization of half-metallic CrO(2) by point contact Andreev reflection.
Andreev reflection at a Pb/CrO(2) point contact has been used to determine the spin polarization of single-crystal CrO(2) films made by chemical vapor deposition. The spin polarization is found to be 0.96 +/- 0.01, which confirms that CrO(2) is a half-metallic ferromagnet, as theoretically predicted.
Ji
Y
Y
Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Maryland 21218, USA.
Strijkers
G J
GJ
Yang
F Y
FY
Chien
C L
CL
Byers
J M
JM
Anguelouch
A
A
Xiao
G
G
Gupta
A
A