Scientists twisted a mysterious superconductor and got a shocking result

Superconductors are materials that allow electricity to flow without resistance, typically only at extremely low temperatures. While most follow well-understood physical rules, strontium ruthenate, Sr₂RuO₄, has remained difficult to explain since its superconducting behavior was first identified in 1994. It is one of the most precisely studied unconventional superconductors, yet researchers still disagree about how its electrons pair up and what symmetry gover...