Speaker
Description
Skyrmions are of potential interest for future memory and memristive devices, opening new possibilities for nanoscale magnetism. Neel skyrmions or hedge-hog skyrmions were reported in systems with perpendicular magnetic anisotropy. Here we report the presence of out-of-plane magnetization spin structures (probably Neel skyrmion) in a single layer of Ta/Co/Pt with in-plane anisotropy using X-ray photoelectron emission microscopy (XPEEM). The out-of-plane spin structures have lateral dimension from 300 nm to >1 um. The perpendicular magnetic anisotropy (PMA) of the sample is ~0.25 MJ/m3. Micromagnetic simulations confirm the presence of a Neel wall surrounding the out-of-plane spin structures. Further experiments are required to obtain a quantitative value of Dzyaloshinskii Moriya interaction (DMI).