Anomalous crossover from three-dimensional Heisenberg to two-dimensional Ising magnetism in a van der Waals magnet

Article excerpt

Nature Physics, Published online: 25 June 2026; doi:10.1038/s41567-026-03356-7 Long-range magnetic order in low-dimensional systems depends on dimensionality and magnetic anisotropy. Now self-intercalation has been shown to tune a crossover from 3D Heisenberg to 2D Ising ferromagnetism in Fe3GeTe2.