In a thin magnetic film, like in an overcrowded hall, each 'person' is a spin arrow that wants to align with its neighbors. But in the corners of the hall, jams occur — vortices where the arrows twist and cannot straighten out. These vortices live in pairs: one spins left, the other right, and together they prevent the hall from fully settling down.

Physicists took such a film and started 'skewing' it: they added anisotropy, where it becomes more favorable for the arrows to point along one direction, and the special Dzyaloshinskii–Moriya interaction, which itself makes neighboring arrows slightly rotate relative to each other. The result was a skewed hall where the spectators not only jostle but also tend to twist into spirals.

The authors calculated on a computer how heat capacity, magnetization, and vortex density change at different temperatures and skew strengths. It turned out that adding eightfold symmetry (when it becomes favorable for the arrows to point in eight different directions) splits the heat capacity peak into two — the hall seems to undergo two separate 'melting' events of order.

Such calculations are not just a mental exercise. Already now, vortices in magnetic films are used to store bits in new types of memory. Understanding how skews control their behavior, engineers will be able to make more stable and faster devices.