2005/04/30 by V. Yu. Irkhin, M. I. Katsnelson
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic properties of thin films #Magnetism in coordination complexes #cond-mat.str-el
paper · pdf · doi:10.1140/epjb/e2005-00157-8
published as Eur. Phys. J. B45, 1 (2005) · 4 pages, final version
openalex publication_date 2005/05/01 · arxiv created 2005/07/05 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
It is proven that the sum rules for X-ray magnetic dichroism (XMCD) spectra that are used to separate spin and orbital contributions to the magnetic moment are formally correct for an arbitrary strength of electron-electron interactions. However, their practical application for strongly correlated systems can become complicated due to the spectral density weight spreading over a broad energy interval. Relevance of incoherent spectral density for the XMCD sum rules is illustrated by a simple model of a ferromagnet with orbital degrees of freedom.