Fig. 4: Shift current tensor σijk.
From: Comprehensive scan for nonmagnetic Weyl semimetals with nonlinear optical response

It is a function of photon energy for a BiTeI, b LaIrP, c LaRhP and d SrHgSn. They are calculated based on TB model Hamiltonians generated by step b of our algorithm. All of them have large shift current with tensor σijk > 100 μA/V2 and huge range of photon energy which can even reach visible light (>1.65 eV).