Left: the nodal planes corresponding to spin-group symmetries in ( c ). The k z = n c * /2 nodal planes, where c * = 2 /c and n is an integer, are protected by [{C}_{2}^{s}|| {M}_{z}] combining with translation symmetry. Right: The three-dimensional Brillouin zone (BZ) with high symmetry points and nodal planes labeled.
