Hidden Density-Wave Instability in the Trimer Ruthenate Ba${}_4$Ru${}_3$O${}_{10}$

Gang Cao, Hengdi Zhao, Adrienne Bond +9

We report a hidden density-wave instability in the trimer-based ruthenate Ba4Ru3O10, previously regarded as a pure antiferromagnet with a phase transition at TA=100 K. This transit…