Thermally Configurable Multi‐Order Polar Skyrmions in Multiferroic Oxide Superlattices

Polar topological textures in low dimensional ferroelectrics have emerged as a versatile platform for high density information storage and neuromorphic computing. While low order topological states, such as vortices and skyrmions, have been extensively studied, high order polar topological families remain largely unexplored due to their higher energy requirements and limited stabilization methods. Here, using a BiFeO 3 (BFO)‐based multiferroic superlattice as a model system, we demonstrate a thermal modulation strategy that stabilizes multi‐order polar skyrmions and enables reversible tuning of their topological order through phase field simulations. It was found that temperature modulation drives the system from polar solitons through 1π‐, 2π‐, 3π‐, and 4π‐skyrmion states, with closed heating cooling path analyses revealing the widest thermal stability window for 2π‐skyrmions (up to 600 K). Leveraging this robustness, 2% Sm doping in BFO lowers the transition temperatures, enabling room temperature stabilization of 2π‐skyrmions. These findings enrich the fundamental understanding of multi‐order polar topologies and establish a tunable strategy for realizing variable order topological configurations in practical electronic devices.