A Crystal Where Electrons Dance to the Tune of Magnets
The EuAuBi crystal is like a layered cake of europium, gold, and bismuth atoms. When cooled to near absolute zero, three different magnetic patterns appear in sequence, like a kaleidoscope pattern shifting with a slight turn. First, the magnetic atoms align strictly in antiphase, then they tilt slightly, and at even lower temperatures, a third order emerges.