ABSTRACT
In this section we briefly review the real-space Green’s function (RSGF) multiple-
scattering (MS) approach for calculations of X-ray absorption spectra (XAS) and
X-ray magnetic circular dichroism (XMCD), as developed by Ankudinov and
Rehr (AR) [Ankudinov and Rehr (1997)]. As discussed by Schattschneider in this
volume in Chap. 3, the energy loss magnetic chiral dichoism (EMCD) spectra are
virtually identical to XMCD within the dipole-approximation, so the approach
discussed here is also applicable to EMCD. An alternative approach to XMCD
based on the wave function approach, as implemented in the linearized aug-
mented planewave method (LAPW), is discussed by Ambrosch-Draxl and Manghi
in Chap. 5 Also, the treatment of EELS and EMCD from atomic multiplet theory is
discussed by Calmels and Rusz in Chap. 4.