Investigation of the Role of Rare-Earth Elements in Spin-Hall Topological Hall Effect in Pt/Ferrimagnetic-Garnet Bilayers

• DOI: 10.1021/acs.nanolett.0c01620
• Publication Date: 2020-05-27T19:02:55Z
• Authors: Aidan J. Lee; Side Guo; Jose Flores; Binbin Wang; Núria Bagués; David W. McComb; Fengyuan Yang
• Keywords: Ferrimagnetism

Topological magnetic textures such as skyrmions are being extensively studied for their potential application in spintronic devices. Recently, low-damping ferrimagnetic insulators (FMI) Tm3Fe5O12 have attracted significant interest candidates hosting skyrmions. Here, we report the detection of spin-Hall topological Hall effect (SH-THE) Pt/Tm3Fe5O12 and Pt/Y3Fe5O12 bilayers grown on various orientations Gd3Ga5O12 substrates well epitaxial buffer layers Y3Sc2Al3O12, which separates FMI from substrate without sacrificing crystal quality. The presence SH-THE all trilayers provides evidence that rare-earth ions either or may not be critical inducing an interfacial Dzyaloshinskii-Moriya interaction is necessary to stabilize textures. Additionally, use with alters anisotropy, shifts temperatures strength SH-THE.