Defect‐Engineered Dzyaloshinskii–Moriya Interaction and Electric‐Field‐Switchable Topological Spin Texture in SrRuO₃ (Adv. Mater. 33/2021)

Skyrmionic Bubbles In article number 2102525, Lingfei Wang, Jinxing Zhang, and co-workers report that, at the interface between the perovskite-structured SrTiO3(001) substrate and SrRuO3 thin film, the distinct chemical potentials make the oxygen vacancies preferentially diffuse from SrTiO3 to SrRuO3. This unidirectional oxygen-vacancy diffusion process can create a new interface between stoichiometric and oxygen-deficient SrRuO3 layers, and the resultant inversion-symmetry-breaking can further trigger a vortex-like spin texture, namely, skyrmionic magnetic bubbles.