Superconductors go fractal

Oxygen atoms arrange themselves in a self-similar pattern

A new experiment using powerful X-ray beams has found a surprising pattern lurking in a superconductor, a material that conducts electricity without energy-sapping resistance. In a particular kind of superconductor, oxygen atoms are physically arranged as a fractal, showing the same pattern at small and large scales. 

Fractals have been spotted in places as diverse as broccoli, England’s coastline and financial markets.