Evidence for a nematic phase in La${}_{1.75}$Sr${}_{0.25}$NiO${}_4$

Ruidan Zhong, Barry L. Winn, Genda Gu +2

Determining the nature of electronic states in doped Mott insulators remains a challenging task. In the case of tetragonal La${}_{2-x}$Sr${}_x$NiO${}_4$, the occurrence of diagonal c…