Magnetic proximity in a van der Waals heterostructure of magnetic insulator and graphene
Artikel i vetenskaplig tidskrift, 2020

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 Cr2Ge2Te6 and graphene, our observations indicate an out-of-plane proximity-induced ferromagnetic exchange interaction in graphene. The perpendicular magnetic anisotropy of Cr2Ge2Te6 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.

2D ferromagnet

graphene

van der Waals heterostructures

magnetism

proximity effect

spin anisotropy

Cr2Ge2Te6

Författare

Bogdan Karpiak

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Aron W. Cummings

Consejo Superior de Investigaciones Científicas (CSIC)

Barcelona Institute of Science and Technology (BIST)

Klaus Zollner

Universität Regensburg

Marc Vila

Consejo Superior de Investigaciones Científicas (CSIC)

Barcelona Institute of Science and Technology (BIST)

Universitat Autonoma de Barcelona (UAB)

Dmitrii Khokhriakov

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Anamul Md Hoque

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

André Dankert

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Peter Svedlindh

Uppsala universitet

Jaroslav Fabian

Universität Regensburg

Stephan Roche

Institucio Catalana de Recerca i Estudis Avancats

Consejo Superior de Investigaciones Científicas (CSIC)

Barcelona Institute of Science and Technology (BIST)

Saroj Prasad Dash

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

2D Materials

2053-1583 (eISSN)

Vol. 7 1 015026

Ämneskategorier

Annan materialteknik

Den kondenserade materiens fysik

DOI

10.1088/2053-1583/ab5915

Mer information

Senast uppdaterat

2020-02-12