Supersolidity Is Born at the Liquid Boundary ⚡ экспресс
Original: "Fluctuation-Induced Supersolidity at the Superfluid-Solid Interface"
Special ripples on liquid helium’s surface freeze it solid—without altering what’s underneath.
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Supersolid matter—ice that flows without friction—is usually made by tweaking the forces between atoms. But it turns out, just taking liquid helium and a solid wall is enough: waves at the boundary will turn the surface layer into a quantum crystal all on their own.
🎯 The idea of supersolidity is over half a century old, but it wasn’t until 2017 that it was realized by trapping ultracold atoms in a laser cage.