Emergence of phase coherence in a magnon Bose, Einstein condensate

Article excerpt

Nature Physics, Published online: 13 July 2026; doi:10.1038/s41567-026-03373-6 Directly observing how a coherent global phase forms has long been challenging. Now an incoherent magnon gas is observed to transform into a state with a macroscopic global phase, confirming a key prediction of Bose, Einstein condensation theory.