Hidden chiral mode self-generated from intrinsic magnetic heterogeneity

We discovered a family of symmetry-breaking magnetic soliton modes in isotropic ferromagnets, recognized as chiral magnetic solitons: left-handed, right-handed, and neutral magnetic solitons. In practical magnetic systems, the lifetime of these solitons is estimated to be in the nanosecond range due to damping effects, accounting for their absence in experimental observations thus far. Solving the Landau-Lifshitz-Gilbert(LLG) equation, the governing equation for magnetic dynamics, poses an exceptional challenge, rendering it a longstanding problem. Theoretically, we employed a sophisticated mathematical geometric mapping method to derive an exact solution to the LLG equation and uncovered these hidden chiral magnetic solitons. To facilitate the experimental realization and manipulation of unique magnetic soliton states, we proposed a scheme to regulate these chiral magnetic solitons using spin-transfer torque induced by spin currents. This approach holds promise for opening new avenues in spintronic applications based on chiral magnetic solitons.