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Spin filtering by proximity effects at hybridized interfaces in spin-valves with 2D graphene barriers

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Spin filtering by proximity effects at hybridized interfaces in spin-valves with 2D graphene barriers

dc.contributor.author	Piquemal-Banci, M.
dc.contributor.author	Galceran, Regina
dc.contributor.author	Dubois, Simon M.-M.
dc.contributor.author	Zatko, V.
dc.contributor.author	Galbiati, Marta
dc.contributor.author	Godel, Florian
dc.contributor.author	Martin, M.-B.
dc.contributor.author	Weatherup, Robert S.
dc.contributor.author	Petroff, F.
dc.contributor.author	Fert, Albert
dc.contributor.author	Charlier, Jean-Christophe
dc.contributor.author	Robertson, John
dc.contributor.author	Hofmann, Stephan
dc.contributor.author	Dlubak, Bruno
dc.contributor.author	Seneor, Pierre
dc.date.accessioned	2021-04-28T16:11:50Z
dc.date.available	2021-04-28T16:11:50Z
dc.date.issued	2020
dc.identifier.citation	Piquemal-Banci, M. Galceran, Regina Dubois, Simon M.-M. Zatko, V. Galbiati, Marta Godel, Florian Martin, M.-B. Weatherup, Robert S. Petroff, F. Fert, Albert Charlier, Jean-Christophe Robertson, John Hofmann, Stephan Dlubak, Bruno Seneor, Pierre 2020 Spin filtering by proximity effects at hybridized interfaces in spin-valves with 2D graphene barriers Nature Communications 11 5670
dc.identifier.uri	https://hdl.handle.net/10550/78965
dc.description.abstract	We report on spin transport in state-of-the-art epitaxial monolayer graphene based 2D-magnetic tunnel junctions (2D-MTJs). In our measurements, supported by ab-initio calculations, the strength of interaction between ferromagnetic electrodes and graphene monolayers is shown to fundamentally control the resulting spin signal. In particular, by switching the graphene/ferromagnet interaction, spin transport reveals magneto-resistance signal MR > 80% in junctions with low resistance × area products. Descriptions based only on a simple K-point filtering picture (i.e. MR increase with the number of layers) are not sufficient to predict the behavior of our devices. We emphasize that hybridization effects need to be taken into account to fully grasp the spin properties (such as spin dependent density of states) when 2D materials are used as ultimately thin interfaces. While this is only a first demonstration, we thus introduce the fruitful potential of spin manipulation by proximity effect at the hybridized 2D material / ferromagnet interface for 2D-MTJs.
dc.language.iso	eng
dc.relation.ispartof	Nature Communications, 2020, vol. 11, p. 5670
dc.subject	Ciència dels materials
dc.subject	Nanotecnologia
dc.title	Spin filtering by proximity effects at hybridized interfaces in spin-valves with 2D graphene barriers
dc.type	journal article	es_ES
dc.date.updated	2021-04-28T16:11:50Z
dc.identifier.doi	10.1038/s41467-020-19420-6
dc.identifier.idgrec	146199
dc.rights.accessRights	open access	es_ES