Magnetic Compton profiles of Fe and Ni corrected by dynamical electron correlations

Details Magnetic Compton profiles of Fe and Ni corrected by dynamical electron correlations Magnetic Compton profiles of Fe and Ni corrected by dynamical electron correlations

2011-11-21

arxiv.org/abs/1111.4848v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

Magnetic Compton profiles (MCPs) of Ni and Fe along [111] direction have been calculated using a combined Density Functional and many-body theory approach. At the level of the local spin density approximation the theoretical MCPs does not describe correctly the experimental results around the zero momentum transfer. In this work we demonstrate that inclusion of electronic correlations as captured by Dynamical Mean Field Theory (DMFT) improves significantly the agreement between the theoretical and the experimental MCPs. In particular, an energy decomposition of Ni MCPs gives indication of spin polarization and intrinsic nature of Ni 6 eV satellite, a genuine many-body feature.

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