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Dresden 2006 – scientific programme

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MA: Magnetismus

MA 31: Magnetic Measuring Techniques

MA 31.3: Talk

Thursday, March 30, 2006, 16:45–17:00, HSZ 103

Theoretical contributions to the analysis of XMCD spectra — •Fabian Dörfler1, Christos Kostoglou1, Matej Komelj2, and Manfred Fähnle11MPI Metallforschung, Heisenbergstr. 3, D-70569 Stuttgart — 2Josef Stefan Institute, Jamova 39, SI-1000 Ljubliana, Slovenia

In the first part of the talk we will discuss under what circumstances the so called ground state moments, introduced by van der Laan [1] for atomic multiplet configurations, can be obtained also for atoms in a solid from the shape of the measured XMCD spectra. Starting from an isolated atom in a very strong crystal field, we will comment on the ground state moment analysis of XMCD spectra in solids suggested by Goering et al. [2].
In the second part of the talk the influence of the mixing of the 2p1/2 and 2p3/2 core levels by the crystal field or by the exchange field experienced by the core electrons is discussed, with special emphasis on the system CrO2.

[1] G. van der Laan, Phys. Rev. B 55, 8086 (1997)

[2] E. Goering et al., Appl. Phys. A 78, 855 (2004)

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