Journal
PHYSICAL REVIEW LETTERS
Volume 86, Issue 24, Pages 5585-5588Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.5585
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Andreev reflection at a Pb/CrO2 point contact has been used to determine the spin polarization of single-crystal CrO2 films made by chemical vapor deposition. The spin polarization is found to be 0.96 +/- 0.01, which confirms that CrO2 is a half-metallic ferromagnet, as theoretically predicted.
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