Unconventional density-wave state in Ruddlesden‒Popper nickelate La 4 Ni 3 O 10
Tao Wu
Nature Communications, Published online: 14 May 2026; doi:10.1038/s41467-026-73082-4 The authors reveal a two-stage formation of density-wave order in nickelate La4Ni3O10 at ambient pressure. First, a short-range charge order develops in the inner Ni-O layer, accompanied by a dramatic enhancement of spin fluctuations, followed by fully-developed charge and spin orders at lower temperature.