Pressure-Invariant Isotope Effect as Evidence for Electronically Driven Intertwined Order in Pr 4 Ni 3 O 10
Researchers used muon-spin rotation to study how oxygen isotopes affect the spin-density wave (SDW) transition in Pr4Ni3O10 under pressure. They found a finite but pressure-invariant isotope shift, meaning the effect doesn't change much when compressed. This suggests that electronic correlations, not lattice effects, dominate the intertwined charge and spin ordering in these materials.