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arXiv · 0912.2867

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

S. Valencia·A. Kleibert·A. Gaupp·J. Rusz·D. Legut·J. Bansmann·W. Gudat·P. M. Oppeneer
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Abstract

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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S. Valencia, A. Kleibert, A. Gaupp, J. Rusz, D. Legut, J. Bansmann, W. Gudat, P. M. Oppeneer. 2009-12-15. Quadratic X-ray magneto-optical effect in reflection at the M-edges of 3d transition metals. https://arxiv.org/abs/0912.2867

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