Speaker
Description
The nanometer-scale vortex-like spin textures, such as vortex-anrivortex pairs in ferromagnetic (FM) domain walls [1], votices in superconductors [2], skyrmion (lattice) [3] and antiskyrmions [4] in magnets with inversion symmetry, have recently attracted enormous attention owing to their topological manner[5]. To confirm such minute complex spin textures and their dynamics with external stimuli, the real space observation have been performed by Lorentz transmission electron microscopy (TEM).
[1] X.Z. Yu, et al., Adv. Mater. 29, 1603958 (2017).[2] A. Tonomura, et al., Nature 397, 308 (1999). [3] X.Z. Yu, et al., Nature 465, 901 (2010).[4] Ajaya K. Nayak, et al., Nature 548, 561 (2017).[5] N. Nagaosa and Y. Tokura, Nat. Nanotechnol. 8, 899 (2013).[6] X.Z. Yu, et al., Nature 564, 95 (2018).
