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  • Title: Probing the Source of the Interfacial Dzyaloshinskii-Moriya Interaction Responsible for the Topological Hall Effect in Metal/Tm_{3}Fe_{5}O_{12} Systems.
    Author: Lee AJ, Ahmed AS, Flores J, Guo S, Wang B, Bagués N, McComb DW, Yang F.
    Journal: Phys Rev Lett; 2020 Mar 13; 124(10):107201. PubMed ID: 32216433.
    Abstract:
    The interfacial Dzyaloshinskii-Moriya interaction (DMI) is responsible for the emergence of topological spin textures such as skyrmions in layered structures based on metallic and insulating ferromagnetic films. However, there is active debate on where the interfacial DMI resides in magnetic insulator systems. We investigate the topological Hall effect, which is an indication of spin textures, in Tm_{3}Fe_{5}O_{12} films capped with various metals. The results reveal that Pt, W, and Au induce strong interfacial DMI and topological Hall effect, while Ta and Ti cannot. This study also provides insights into the mechanism of electrical detection of spin textures in magnetic insulator heterostructures.
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