YbSb₂: First Type-I Superconductor to Break Time-Reversal Symmetry

Scientists have discovered YbSb₂, the first type-I superconductor to spontaneously break time-reversal symmetry, creating a tiny magnetic field as it enters the superconducting state.

Why it matters. This breakthrough could lead to new insights into superconductivity and potential applications in quantum computing and other advanced technologies.