Fig. 5: The mechanism analysis for \({\sigma }_{zzz}^{\prime}(\overrightarrow{k};0,\omega ,-\omega )\) of SrHgSn.
From: Comprehensive scan for nonmagnetic Weyl semimetals with nonlinear optical response

a Energy dispersion along high symmetry k-path. b Density of states (DOS). c–e Distribution of \({\sigma }_{zzz}^{\prime}(\overrightarrow{k};0,\omega ,-\omega )\) in reciprocal space contributed by band n − 1 in kz = 0.312π/c plane with ℏω = 1.8 eV, band n − 1 in kz = 0.132π/c plane with ℏω = 1.95 eV, and band n in kz = 0.132π/c plane with ℏω = 1.95 eV, respectively. f–h Light excitation from band n − 1 to bands n + 3 and n + 4 in kz = 0.312π/c plane with ℏω = 1.8 eV, from band n − 1 to bands n + 7, n + 8, n + 9 and n + 10 in kz = 0.132π/c plane with ℏω = 1.95 eV, and from band n to bands n + 7, n + 8, n + 9 and n + 10 in kz = 0.132π/c plane with ℏω = 1.95 eV, respectively. n is the number of electrons in the primitive cell. The blue and red arrows in f–h represent positive and negative contributions to σzzz.