Table 1 Symmetry properties of electromagnetic linear response functions
Tensor | P | T | PT | Phenomena | Kerr | Faraday |
|---|---|---|---|---|---|---|
χij | +  | + | + | Refraction and absorption | No | No |
\({\chi }_{ij}^{{\prime} }\) | +  | − | − | Hall effect | Yes | Yes |
\({G}_{ij},{a}_{ijk}^{{\prime} }\) | −  | − | + | Optical magneto-electric effect | Yes | No |
\({G}_{ij}^{{\prime} },{a}_{ijk}\) | −  | + | − | Natural optical activity | No | Yes |
