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Sign convention for dielectric permittivity tensor
Posted Aug 25, 2023, 4:38 a.m. EDT 0 Replies
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I'm simulating a magneto-optical metasurface composed of cobalt disk, SiO2 layer, Co layer and gold bulk layer. To account for the magnetic field, I inserted two off-diagonal terms into the dielectric permittivity tensor. I don't know if I'm choosing the sign convention well. I defined the diagonal terms with the equation er(c_const/freq)-jei(c_const/freq). Where er=n^2-k^2 and ei=2nk. For the off-diagonal terms I used a similar definition: exy_real(c_const/freq)-jexy_im(c_const/freq). I attach the image where you can see how I defined the dielectric permittivity tensor.
Thank you
Alberto
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Hello Alberto Santonocito
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