Fig. 4: Chiral OsSi as an example of SP-PST of type II.
From: Universal symmetry-protected persistent spin textures in noncentrosymmetric crystals
a Cubic unit cell. b Electronic structure along the high-symmetry lines; the energy gap is 200 meV. c Constant energy surfaces of the lowest (highest) conduction (valence) bands. The energy levels are set to +50 meV and −50 meV with respect to CBM and VBM, respectively. d Three-dimensional view of the valence and conduction bands closest to the Fermi level. The arrows represent the spin texture. The central color maps display the energy profiles. e Maps of the spin texture at the xy and yz planes. The wave vector is given with respect to the X point, which is set to zero. The constant energy contours correspond to E = 50 meV.
