2020/07/31 by Sachin Krishnia, Eloi Haltz, Léo Berges +7
Materials Science · Physics and Astronomy · #Asymmetry #Brillouin zone #Chemical and Physical Properties of Materials #Coupling (piping) #Ferrimagnetism #Inversion (geology) #Magnetic properties of thin films #Topological Materials and Phenomena #Torque #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevapplied.16.024040
published as Phys. Rev. Applied 16, 024040 (2021)
arxiv created 2021/08/24 · openalex publication_date 2021/08/24 · arxiv updated 2021/08/26 · openalex created_date 2021/08/30 · openalex updated_date 2026/08/05
We demonstrate that the effects of spin-orbit coupling and inversion asymmetry exist in a single Gd\text\ensuremath-Fe\text\ensuremath-Co ferrimagnetic layer, even without a heavy-metal interface. We use electric transport measurements to quantify the spin-orbit torques. We measure the Dzyaloshinskii-Moriya interaction using the Brillouin light-scattering measurement technique, and we observe the resulting chiral magnetic textures using x-ray photoemission electron microscopy. We attribute these effects to a composition variation along the thickness that we observe by scanning transmission electron microscopy. We show that these effects can be optimized by varying the Gd\text\ensuremath-Fe\text\ensuremath-Co thickness or in combination with interfacial effects.