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

doi:10.1063/1.2801693

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

Science Institute

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

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 language	English
Article number	172504
Journal	Applied Physics Letters
Volume	91
Issue number	17
DOIs	https://doi.org/10.1063/1.2801693
Publication status	Published - 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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abstract = "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.",

author = "Yates, {K. A.} and Branford, {W. R.} and F. Magnus and Y. Miyoshi and B. Morris and Cohen, {L. F.} and Sousa, {P. M.} and O. Conde and Silvestre, {A. J.}",

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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doi = "10.1063/1.2801693",

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journal = "Applied Physics Letters",

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T1 - The spin polarization of Cr O2 revisited

AU - Yates, K. A.

AU - Branford, W. R.

AU - Magnus, F.

AU - Miyoshi, Y.

AU - Morris, B.

AU - Cohen, L. F.

AU - Sousa, P. M.

AU - Conde, O.

AU - Silvestre, A. J.

N1 - 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.

PY - 2007

Y1 - 2007

N2 - 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.

AB - 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.

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VL - 91

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 17

M1 - 172504

ER -

The spin polarization of Cr O2 revisited

Abstract

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