期刊
NATURE MATERIALS
卷 17, 期 7, 页码 605-+出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41563-018-0079-4
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资金
- European Union's Horizon 2020 Research and Innovation Programme [696656]
- ANR ULTRASKY, SOSPIN
- GENCI-CINES [C2016097605]
- Office of Science, Office of Basic Energy Sciences, of the US Department of Energy [DE-AC02-05CH11231]
- UC Office of the President Multicampus Research Programs and Initiatives [MRP-17-454963]
- NSF [DMR-1610060]
- Brazilian agency CAPES
- Brazilian agency CNPq
- Brazilian agency FAPEMIG
The possibility of utilizing the rich spin-dependent properties of graphene has attracted much attention in the pursuit of spintronics advances. The promise of high-speed and low-energy-consumption devices motivates the search for layered structures that stabilize chiral spin textures such as topologically protected skyrmions. Here we demonstrate that chiral spin textures are induced at graphene/ferromagnetic metal interfaces. Graphene is a weak spin-orbit coupling material and is generally not expected to induce a sufficient Dzyaloshinskii-Moriya interaction to affect magnetic chirality. We demonstrate that indeed graphene does induce a type of Dzyaloshinskii-Moriya interaction due to the Rashba effect. First-principles calculations and experiments using spin-polarized electron microscopy show that this graphene-induced Dzyaloshinskii-Moriya interaction can have a similar magnitude to that at interfaces with heavy metals. This work paves a path towards two-dimensional-material-based spin-orbitronics.
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