6 papers
Sub-20 nm spin textures with arbitrary topological charge stabilized by higher-order interactions
Zhen Sun, Shiwei Zhu, Moritz A. Goerzen +3
Topological magnetization textures play a central role in modern magnetism. For many applications, spin textures with different topological charges in the same system are parti…
Topological spin textures in 2D altermagnetic chromium chalcogenides: Interplay between magnetic frustration and Dzyaloshinskii-Moriya interaction
Zirui Zhang, Shiwei Zhu, Ruixiao Ma +3
Altermagnetism has recently emerged as a distinct magnetic paradigm, yet the exploration of topological spin textures within two-dimensional (2D) altermagnets remains limited. Usin…
Beating micromagnetic limits on skyrmion stability by long-range frustration
Shiwei Zhu, Moritz A. Goerzen, Changsheng Song +1
Skyrmion stability is commonly assumed to scale with skyrmion size or exchange stiffness within micromagnetic models. Here, we demonstrate that long-range exchange frustration can…
Extended saddle points govern long-lived antiskyrmions
Megha Arya, Moritz A. Goerzen, Lionel Calmels +4
Achieving long-lived nanoscale magnetic solitons remains a central challenge, as their lifetimes typically decrease rapidly with temperature. Here, we demonstrate that anisotropic…
Universal two-stage dynamics and phase control in skyrmion formation
Shiwei Zhu, Xinyuan Guan, Zhen Sun +2
We uncover a universal two-stage dynamics during skyrmion formation and establish its connection to equilibrium phases through the introduction of a chiral correlation . Stage I…
Strongly enhanced lifetime of higher-order bimerons and antibimerons
Shiwei Zhu, Moritz A. Goerzen, Changsheng Song +2
Magnetic bimerons, similar to skyrmions, are topologically nontrivial spin textures characterized by topological charge . Most studies so far have focused on low- solitons ($…