by **perezlist2015** » Wed Apr 26, 2017 12:37 pm

Dear Davide

thanks for your reply

I have been looking at the link that you sent, and that seems to be consistent with the

literature I have looked at (magneto-optics)

I seem to have a problem with understanding the following: the bottom equation at the section "few equations"

in your tutorial on Fe Kerr MO seems to be consistent with the fundamental electrodynamics (equation 63 in "Magneto-optical effects in transition metal

systems", H Ebert, Rep Prog Phys 59 (1996) 1665-1735)

n = sqrt(epsilon)

where n is the complex refractive index and epsilon is the dielectric tensor

In fact, for natural circular dichroism and optical rotation, what you look at usually is the difference for both right-circularly polarised and

left circularly polarised light of either the real or the imaginary part of n, and, n has one extra term:

n = sqrt(epsilon*nu) +- alpha for both RCP and LCP

alpha is what I cannot find anywhere in the magneto-optics theory (nu is the magnetic permeability -macroscopic- which for non-magnets is 1, we can forget it)

regards

Manuel

PS alpha originates from the constitutive equations, like D = epsilon E + i alpha, B = nu H - i alpha (i is the square root of -1)