Oriented 3D magnetic biskyrmions in MnNiGa bulk crystals
Advanced Materials Wiley 31:17 (2019) 1900264
Abstract:
A biskyrmion consists of two bound, topologically stable, skyrmion spin textures. These coffee‐bean‐shaped objects are observed in real space in thin plates using Lorentz transmission electron microscopy (LTEM). From LTEM imaging alone, it is not clear whether biskyrmions are surface‐confined objects, or, analogous to skyrmions in noncentrosymmetric helimagnets, 3D tube‐like structures in a bulk sample. Here, the biskyrmion form factor is investigated in single‐ and polycrystalline‐MnNiGa samples using small‐angle neutron scattering. It is found that biskyrmions are not long‐range ordered, not even in single crystals. Surprisingly all of the disordered biskyrmions have their in‐plane symmetry axis aligned along certain directions, governed by the magnetocrystalline anisotropy. This anisotropic nature of biskyrmions may be further exploited to encode information.Oriented Three-Dimensional Magnetic Biskyrmion in MnNiGa Bulk Crystals
Advanced Materials Wiley (2019)
Temperature dependence of the ferromagnetic response in CrxSb2-xTe3 topological insulator thin films investigated using terahertz spectroscopy and magneto-transport
Proceedings of SPIE Society of Photo-Optical Instrumentation Engineers 10917:2019 (2019)
Oriented Three-Dimensional Magnetic Biskyrmion in MnNiGa Bulk Crystals
(2019)
Anatomy of skyrmionic textures in magnetic multilayers
Advanced Materials Wiley 31:14 (2019) 1807683