What are these nanostars in 2D-superconductor supposed to mean?

Physicists from France and Russia have discovered magnetic disturbances in two-dimensional (2D) layered superconductors resembling small oscillating stars. These star-like electronic excitations are located around individual magnetic atoms within the superconducting material. This experimental observation, made by means of scanning tunneling spectroscopy at only 0.3 degrees above absolute zero, is the direct confirmation of the famous theory by Yu-Shiba-Rusinov, who predicted these quantum-bound magnetic states.

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