${\mathrm{PbTiO}}_3/{\mathrm{SrTiO}}_3$ artificial superlattices recently emerged as a prototypical platform for the emergence and study of polar topologies. While previous studies mainly focused on the polar textures inherent to the ferroelectric ${\mathrm{PbTiO}}_3$ layers, the oxygen octahedra rotations inherent to the paraelectric ${\mathrm{SrTiO}}_3$ layers have attracted little attention. Here, we highlight a biunivocal relationship between distinct polar topologies—including $a_1/a_2$ domains, polar vortices, and skyrmions—within the ${\mathrm{PbTiO}}_3$ layers and specific patterns of oxygen octahedra rotations in the ${\mathrm{SrTiO}}_3$ layers. This relationship arises from a coupling mediated by inhomogeneous strains between the two materials and is shown to be reciprocal. Through second-principles atomistic simulations, we demonstrate that each polar texture imposes a corresponding rotation pattern, while conversely, a frozen oxygen octahedra rotation dictates the emergence of the associated polar state. This confirms the strong coupling between oxygen octahedra rotations in ${\mathrm{SrTiO}}_3$ and polarization in ${\mathrm{PbTiO}}_3$, highlighting their cooperative role in stabilizing complex polar textures in related superlattices.

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• Domain walls
• Domains
• Ferroelasticity
• Strain
• Polarization
• Topology