2020/01/23 by X. Palermo, N. Reyren, S. Mesoraca +11
Materials Science · Physics and Astronomy · #Ferromagnetism #Flux pinning #Magnetic and transport properties of perovskites and related materials #Magnetic domain #Magnetic field #Magnetic flux #Magnetic properties of thin films #Magnetization #Physics of Superconductivity and Magnetism #Pinning force #Skyrmion #Superconductivity #Vortex #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevapplied.13.014043
published as Phys. Rev. Applied 13, 014043 (2020)
openalex publication_date 2020/01/23 · openalex created_date 2020/01/30 · arxiv created 2020/03/02 · arxiv updated 2020/03/03 · openalex updated_date 2026/08/05
Superconductor-ferromagnet (S/F) hybrid systems show interesting magnetotransport behaviors that result from the transfer of properties between both constituents. For instance, magnetic memory can be transferred from the F into the S through the pinning of superconducting vortices by the ferromagnetic textures. The ability to tailor this type of induced behavior is important to broaden its range of application. Here we show that engineering the F magnetization reversal allows the tuning of the strength of the vortex pinning (and memory) effects, as well as the field range in which they appear. This is done by using magnetic multilayers in which Co thin films are combined with different heavy metals (Ru, Ir, Pt). By choosing the materials, thicknesses, and stacking order of the layers, we can design the characteristic domain size and morphology, from out-of-plane magnetized stripe domains to much smaller magnetic skyrmions. These changes strongly affect the magnetotransport properties. The underlying mechanisms are identified by comparing the experimental results to a magnetic pinning model.