Topological Dirac Nodal-net Fermions in AlB${}_2$-type TiB${}_2$ and ZrB${}_2$

Xing Feng, Changming Yue, Zhida Song +2

Based on first-principles calculations and effective model analysis, a Dirac nodal-net semimetal state is recognized in AlB${}_2$-type TiB${}_2$ and ZrB${}_2$ when spin-orbit coupling (S…