Volume 66, Number 3, May 2004
|Page(s)||441 - 447|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 April 2004|
Spin-dependent sum rules for X-ray absorption spectra
Department of Physics, University of Washington Seattle, WA 98195-1560, USA
2 Institut für Experimentalphysik, Freie Universität Berlin D-14195 Berlin-Dahlem, Germany
Accepted: 19 February 2004
The X-ray absorption sum rules for the spin and orbital moments are generalized, through the introduction of a spin-asymmetry parameter, to account for the spin dependence of the dipole matrix elements. This generalization is important for the analysis of -edge X-ray magnetic circular dichroism of rare-earth elements, for which the original sum rules erroneously predict an antiparallel alignment of the and moments. The corrections to the sum rules are of the same order as the extracted moments for these systems. A procedure to apply the generalized sum rules is given, which makes use of theoretical calculations in addition to experimental data; the procedure is illustrated for metal.
PACS: 78.70.Dm – X-ray absorption spectra / 78.20.Ls – Magnetooptical effects / 75.50.Cc – Other ferromagnetic metals and alloys
© EDP Sciences, 2004
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.