Competing Charge/Spin-Stripe and Correlated Metal Phases in Trilayer Nickelates (Pr${}_{1-x}$La${}_x$)${}_4$Ni${}_3$O${}_8$

Xinglong Chen, Hong Zheng, Daniel Phelan +6

Low-valent nickelates R${}_{n+1}$Ni${}_n$O${}_{2n+2}$ (R = rare earth) containing Ni${}^{1+}$ (d${}^9$) with a quasi-two-dimensional (quasi-2D) square planar coordination geometry possess…