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Publication
Physical Review Letters
Paper
Determination of the spin polarization of half-metallic CrO2 by point contact Andreev reflection
Abstract
Adreev reflection at a Pb/CrO2 point contact was used to determine the spin polarization of single-crystal CrO2 made by chemical vapor deposition. The spin polarization was found to be 0.96 ± 0.01. A surface barrier layer strongly reduced the apparent spin polarization of CrO2.