Scientists spot hidden magnetic state emerging inside a superconductor
YbSb₂ is the first known type-I superconductor to spontaneously break time-reversal symmetry, creating a tiny magnetic field inside itself as it enters the superconducting state.
YbSb₂ is the first known type-I superconductor to spontaneously break time-reversal symmetry, creating a tiny magnetic field inside itself as it enters the superconducting state.