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  • Néel-type skyrmion in WTe2/...
    Wu, Yingying; Zhang, Senfu; Zhang, Junwei; Wang, Wei; Zhu, Yang Lin; Hu, Jin; Yin, Gen; Wong, Kin; Fang, Chi; Wan, Caihua; Han, Xiufeng; Shao, Qiming; Taniguchi, Takashi; Watanabe, Kenji; Zang, Jiadong; Mao, Zhiqiang; Zhang, Xixiang; Wang, Kang L.

    Nature communications, 07/2020, Letnik: 11, Številka: 1
    Journal Article

    Abstract The promise of high-density and low-energy-consumption devices motivates the search for layered structures that stabilize chiral spin textures such as topologically protected skyrmions. At the same time, recently discovered long-range intrinsic magnetic orders in the two-dimensional van der Waals materials provide a new platform for the discovery of novel physics and effects. Here we demonstrate the Dzyaloshinskii–Moriya interaction and Néel-type skyrmions are induced at the WTe 2 /Fe 3 GeTe 2 interface. Transport measurements show the topological Hall effect in this heterostructure for temperatures below 100 K. Furthermore, Lorentz transmission electron microscopy is used to directly image Néel-type skyrmion lattice and the stripe-like magnetic domain structures as well. The interfacial coupling induced Dzyaloshinskii–Moriya interaction is estimated to have a large energy of 1.0 mJ m −2 . This work paves a path towards the skyrmionic devices based on van der Waals layered heterostructures.