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  • Significant Dzyaloshinskii-...
    Yang, Hongxin; Chen, Gong; Cotta, Alexandre A C; N'Diaye, Alpha T; Nikolaev, Sergey A; Soares, Edmar A; Macedo, Waldemar A A; Liu, Kai; Schmid, Andreas K; Fert, Albert; Chshiev, Mairbek

    Nature materials, 07/2018, Letnik: 17, Številka: 7
    Journal Article

    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.