2018/10/10 by Huang Ping, Marco Cantoni, Ping, Huang +8
Engineering · Physics and Astronomy · #Advanced Condensed Matter Physics #Characterization and Applications of Magnetic Nanoparticles #FOS: Physical sciences #Magnetic properties of thin films #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.1810.04649
arxiv created 2018/10/10 · openalex publication_date 2018/10/10 · arxiv updated 2018/10/11 · openalex created_date 2018/10/26 · openalex updated_date 2026/07/28
Chiral magnetic textures with non-trivial topology are known as skyrmions, and due to their unique properties they are promising in novel magnetic storage applications. While the electric manipulation of either isolated skyrmions or a whole skyrmion lattice have been intensively reported, the electric effects on skyrmion clusters remain scarce. In magnetoelectric compound Cu2OSeO3, a skyrmion cluster can be created near the helical-skyrmion phase boundary. Here, we report the in situ electric field writing/erasing of skyrmions in such a skyrmion cluster. Our real space/time image data obtained by Lorentz transmission electron microscopy and the quantitative analysis evidence the linear increase of the number of skyrmions in the cluster upon the application of a creating electric field. The energy needed to create a single skyrmion is estimated to be E=4.7 × 10-24 J.