English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/146943
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Absence of magnetic proximity effects in magnetoresistive Pt/CoFe2O4 hybrid interfaces

AuthorsValvidares, M.; Dix, Nico ; Sánchez Barrera, Florencio ; Fontcuberta, Josep
KeywordsThin-films
Anisotropy
Issue Date15-Jun-2016
PublisherAmerican Physical Society
CitationPhysical Review - Section B 93: 214415 (2016)
AbstractUltrathin Pt films grown on insulating ferrimagnetic CoFe2O4 (111) epitaxial films display a magnetoresistance upon rotating the magnetization of the magnetic layer. We report here x-ray magnetic circular dichroism (XMCD) recorded at Pt-L2,3 and Pt-M3 edges. The results indicate that the Pt magnetic moment, if any, is below the detection limit (<0.001μB/Pt), thus strongly favoring the view that the presence of CoFe2O4 does not induce the formation of magnetic moments in Pt. Therefore, the observed magnetoresistance cannot be attributed to some sort of proximity-induced magnetic moments at Pt ions and subsequent magnetic-field dependent scattering. It thus follows that either bulk (spin Hall and inverse spin Hall effects) or interface (Rashba) spin-orbit related effects dominate the observed magnetoresistance. Furthermore, comparison of bulk magnetization and XMCD data at (Fe,Co)-L2,3 edges suggests the presence of some spin disorder in the CoFe2O4 layer which may be relevant for the observed anomalous nonsaturating field dependence of spin Hall magnetoresistance.
DescriptionValvidares, M. et al.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.93.214415
URIhttp://hdl.handle.net/10261/146943
DOI10.1103/PhysRevB.93.214415
ISSN2469-9950
Appears in Collections:(ICMAB) Artículos
Files in This Item:
File Description SizeFormat 
Valvidares_PhysRevB_2016_editorial.pdf1,62 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.