Yizheng Wu

2 weeks ago | nature.com | Heng Niu |Bingfeng Miao |Liang Sun |Yizheng Wu |Andreas Schmid |Kai Liu | +2 more

AbstractMagnetic skyrmionic structures, including magnetic skyrmions and antiskyrmions, are characterized by swirling spin textures with non-trivial topologies. They are featured with specific topological charges, Q, which are of crucial importance in determining their topological properties. Owing to the invariance of the chiral nature, it is generally believed that Q is conserved in a given magnetic skyrmionic structure and is hard to alter.

Nov 25, 2024 | nature.com | Heng Niu |Tianping Ma |Colin Ophus |Bingfeng Miao |Liang Sun |Yizheng Wu | +4 more

AbstractThe Dzyaloshinskii-Moriya antisymmetric exchange interaction (DMI) stabilises topological spin textures with promising future spintronics applications. According to crystal symmetry, the DMI can be categorized as four different types that favour different chiral textures. Unlike the other three extensively-investigated types, out-of-plane DMI, as the last type that favours in-plane chirality, remained missing so far.

Feb 21, 2024 | link.aps.org | Chao Zhou |Jia Xu |Yizheng Wu

Strong magnetic anisotropy is crucial for spintronic devices, but the strength of in-plane anisotropy (IMA) has constrained its applications in magnetic storage devices in contrast with the perpendicular magnetic anisotropy (PMA). In our study, we observed a giant interfacial uniaxial IMA in Co/Pt(110) bilayers that is approximately five times larger than the PMA in Co/Pt(111) systems.