Journal
PHYSICAL REVIEW B
Volume 78, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.180402
Keywords
-
Funding
- NSF
- ONR
- MIT-France
Ask authors/readers for more resources
We report the direct measurement of spin polarization in epitaxial CoFe(2)O(4) tunnel barriers using the Meservey-Tedrow technique. By observing an asymmetry in the Al quasiparticle density of states in Pt(111)/CoFe(2)O(4)(111)/gamma-Al(2)O(3)(111)/Al tunnel junctions, we prove the existence of spin filtering in our CoFe(2)O(4) tunnel barriers. We further analyze the effect of oxidation conditions during film growth on the polarization of the tunneling current, revealing an important role played by oxygen vacancies in the spin-filter efficiency of this material.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available