Magnetic proximity in a van der Waals heterostructure of magnetic insulator and graphene
Karpiak, Bogdan (Chalmers University of Technology)
Cummings, Aron (Institut Català de Nanociència i Nanotecnologia)
Zollner, Klaus (University of Regensburg)
Vila Tusell, Marc (Universitat Autònoma de Barcelona. Departament de Física)
Khokhriakov, Dmitrii (Chalmers University of Technology)
Hoque, Anamul Md (Chalmers University of Technology)
Dankert, André (Chalmers University of Technology)
Svedlindh, Peter (Uppsala University)
Fabian, Jaroslav (University of Regensburg)
Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
Dash, Saroj P. (Chalmers University of Technology)

Date:	2019
Abstract:	Engineering 2D material heterostructures by combining the best of different materials in one ultimate unit can offer a plethora of opportunities in condensed matter physics. Here, in the van der Waals heterostructures of the ferromagnetic insulator CrGeTe and graphene, our observations indicate an out-of-plane proximity-induced ferromagnetic exchange interaction in graphene. The perpendicular magnetic anisotropy of CrGeTe results in significant modification of the spin transport and precession in graphene, which can be ascribed to the proximity-induced exchange interaction. Furthermore, the observation of a larger lifetime for perpendicular spins in comparison to the in-plane counterpart suggests the creation of a proximity-induced anisotropic spin texture in graphene. Our experimental results and density functional theory calculations open up opportunities for the realization of proximity-induced magnetic interactions and spin filters in 2D material heterostructures and can form the basic building blocks for future spintronic and topological quantum devices.
Grants:	European Commission 785219 Ministerio de Economía y Competitividad SEV-2017-0706
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Graphene ; 2D ferromagnet ; Van der Waals heterostructures ; Cr2Ge2Te6 ; Proximity effect ; Magnetism ; Spin anisotropy
Published in:	2D Materials, Vol. 7, Núm. 1 (December 2019) , art. 15026, ISSN 2053-1583

DOI: 10.1088/2053-1583/ab5915

9 p, 1.8 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles