Journal
APPLIED PHYSICS LETTERS
Volume 105, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4897544
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Funding
- European Union 7th Framework Programme under the Marie Curie Actions [256470-ITAMOSCINOM]
- NMP Project [263104-HINTS]
- European Research Council [257654-SPINTROS]
- Spanish Ministry of Science and Education [MAT2012-37638, MAT2011-29269-C03, CSD2007-00041]
- Basque Government [PI2011-1, BFI-2011-106]
- Catalan Government [2009 SGR 00376]
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We report magnetoresistance measurements on thin Pt bars grown on epitaxial (001) and (111) CoFe2O4 (CFO) ferrimagnetic insulating films. The results can be described in terms of the recently discovered spin Hall magnetoresistance (SMR). The magnitude of the SMR depends on the interface preparation conditions, being optimal when the Pt/CFO samples are prepared in situ, in a single process. The spin-mixing interface conductance, the key parameter governing SMR and other relevant spin-dependent phenomena, such as spin pumping or spin Seebeck effect, is found to be different depending on the crystallographic orientation of CFO, highlighting the role of the composition and density of magnetic ions at the interface on spin mixing. (C) 2014 AIP Publishing LLC.
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