Fig. 3: DFT and model analysis of dipole matrix, its generalized derivatives, and shift current contribution along ky.
From: Peculiar band geometry induced giant shift current in ferroelectric SnTe monolayer
a The norm of dipole matrix \({r}_{vc}^{x}\) and \({r}_{vc}^{y}\) along ky, where v and c are highest valence band and lowest conduction band, respectively. b The norm of the generalized derivative of dipole matrix, \({r}_{cv;y}^{y}\), along ky. c The \({I}_{vc}={{{\rm{Im}}}}\left[{I}_{vc}^{yxy}+{I}_{vc}^{yyx}\right]\) along ky. The results obtained from DFT and model calculations are shown in solid and dashed lines, respectively.
