Determination of the spin polarization of half-metallic CrO2 by point contact Andreev reflection

Authors
Ji, Y Strijkers, GJ Yang, FY Chien, CL Byers, JM Anguelouch, A Xiao, G Gupta, A
Citation
Y. Ji et al., Determination of the spin polarization of half-metallic CrO2 by point contact Andreev reflection, PHYS REV L, 86(24), 2001, pp. 5585-5588
Citations number
23
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
86
Issue
24
Year of publication
2001
Pages
5585 - 5588
Database
ISI
SICI code
0031-9007(20010611)86:24<5585:DOTSPO>2.0.ZU;2-F
Abstract
Andreev reflection at a Pb/CrO2 point contact has been used to determine th e spin polarization of single-crystal CrO2 films made by chemical vapor dep osition. The spin polarization is found to be 0.96 +/- 0.01, which confirms that CrO2 is a half-metallic ferromagnet, as theoretically predicted.