The spin polarization of Cr O2 revisited

K. A. Yates*, W. R. Branford, F. Magnus, Y. Miyoshi, B. Morris, L. F. Cohen, P. M. Sousa, O. Conde, A. J. Silvestre

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


Here, we use Andreev reflection spectroscopy to study the spin polarization of high quality Cr O2 films. We study the spin polarization as a function of growth temperature, resulting in grain size and electrical resistivity. In these films low temperature growth appears to be a necessary but not sufficient condition to guarantee the observation of high spin polarization, and this is only observed in conjunction with suppressed superconducting gap values and anomalously low interface properties. We suggest that this combination of observations is a manifestation of the long range spin triplet proximity effect.

Original languageEnglish
Article number172504
JournalApplied Physics Letters
Issue number17
Publication statusPublished - 2007

Bibliographical note

Funding Information:
This work is supported by CRUP/British Council Grant No. B-7/07 and EPSRC GR/T03802. P.M.S. is grateful to FCT (Lisbon) for a PhD grant.


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