Mottness in two-dimensional van der Waals Nb${}_3$X${}_8$ monolayers (X=Cl, Br, and I)

Yi Zhang, Yuhao Gu, Hongming Weng +2

We investigate strong electron-electron correlation effects on 2-dimensional van der Waals materials Nb${}_3$X${}_8$ (X=Cl, Br, I). We find that the monolayers Nb${}_3$X${}_8$ are ideal sy…