2020/12/20 by Kejing Ran, Yizhou Liu, Yao Guang +9 · 2 citations
Physics and Astronomy · #Condensed matter physics #Heterojunction #Lattice (music) #Magnetic properties of thin films #Materials science #Optics #Phase (matter) #Phase diagram #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Scattering #Skyrmion #Theoretical and Computational Physics #cond-mat.mtrl-sci #cond-mat.other
paper · pdf · doi:10.1103/physrevlett.126.017204
arxiv created 2020/12/20 · openalex publication_date 2021/01/08 · arxiv updated 2021/02/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A chiral bobber is a localized three-dimensional magnetization configuration, terminated by a singularity. Chiral bobbers coexist with magnetic skyrmions in chiral magnets, lending themselves to new types of skyrmion-complementary bits of information. However, the on-demand creation of bobbers, as well as their direct observation remained elusive. Here, we introduce a new mechanism for creating a stable chiral bobber lattice state via the proximity of two skyrmion species with comparable size. This effect is experimentally demonstrated in a Cu2OSeO3/[Ta/CoFeB/MgO]4 heterostructure in which an exotic bobber lattice state emerges in the phase diagram of Cu2OSeO3. To unambiguously reveal the existence of the chiral bobber lattice state, we have developed a novel characterization technique, magnetic truncation rod analysis, which is based on resonant elastic x-ray scattering.