Band structure with kz = 0, nodal ring is shown in red. c. Nodal link in momentum space, in-plane nodal chain is shown in blue and the red circle is a nodal ring. Green circles indicate the π1 ...

Discovering and synthesizing symmetry-protected topological (SPT) band degeneracies, including nodal points and nodal lines (NLs), is a rapidly growing frontier in the field of topological ...