Quadratic X-Ray Magneto-Optical Effect upon Reflection in a Near-Normal-Incidence Configuration at the M Edges of 3d-Transition Metals
2010 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 104, no 18, 187401- p.Article in journal (Refereed) Published
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 similar to 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 Schafer-Hubert effect in the x-ray regime. Ab initio density-functional theory calculations reveal that hybridization effects of the 3p core states necessarily 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.
Place, publisher, year, edition, pages
2010. Vol. 104, no 18, 187401- p.
IdentifiersURN: urn:nbn:se:uu:diva-137193DOI: 10.1103/PhysRevLett.104.187401ISI: 000277417500051OAI: oai:DiVA.org:uu-137193DiVA: diva2:378441