Quadratic X-ray magneto-optical effect in reflection at the M-edges of 3d transition metals

Details Quadratic X-ray magneto-optical effect in reflection at the M-edges of 3d transition metals Quadratic X-ray magneto-optical effect in reflection at the M-edges of 3d transition metals

2009-12-15

arxiv.org/abs/0912.2867v1

Physics

Condensed Matter

Materials Science

Submitted

Scientific paper

We have observed a quadratic x-ray magneto-optical effect in near-normal incidence reflection at the M-edges of iron. The effect appears as the magnetically induced rotation of ca. 0.1$ degrees of the polarization plane of linearly polarized x-ray radiation upon reflection. A comparison of the measured rotation spectrum with results from x-ray magnetic linear dichroism data demonstrates that this is the first observation of the Schaefer-Hubert effect in the x-ray regime. Ab initio density-functional theory calculations reveal that hybridization effects of the 3p core states necessarely need to be considered when interpreting experimental data. The discovered magneto-x-ray effect holds promise for future ultrafast and element-selective studies of ferromagnetic as well as antiferromagnetic materials.

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