Strongly Correlated2026-08-022 minarXiv:2608.01062expressMagnetic Light in a CrystalThe crystal Mn₂Mo₃O₈ resembles a tiny city where manganese atoms are arranged in strict order: their magnetic moments (tiny internal arrows) point alternately up and down. This state is called collinear altermagnetism.F. Schilberth·K. Vasin·M. Knauft·M. Kondákor·M. Vuckovic·N. Herrmann·K. Penc·M. Minola·B. Keimer·V. A. Martinez·K. Panda·A. A. Sirenko·L. Prodan·V. Tsurkan·A. A. Tsirlin·I. Kézsmárki·J. DeisenhoferRobert HookeWilliam Lawrence Braggcrystal latticecollective behavior👍👎☆SimplePopularAdvanced