Ferroelectric 2D Antimony Oxides with Wide Bandgaps

Romakanta Bhattarai, Kai Ni, Xiao Shen

The first two-dimensional (2D) polymorphs of antimony dioxide, namely, $\gamma$-Sb${}_2$O${}_4$ and $\delta$-Sb${}_2$O${}_4$, are predicted using the evolutionary algorithm combined with first-princ…