title: X-ray magneto-optics in lanthanides.
abstract: Magneto-optical methods in the visible light regime generally lack element specificity, which has become a considerable shortcoming in research on advanced heteromagnetic systems. Using circularly polarized soft x rays tuned to a 4d-4f core-level transition of a lanthanide element, the specularly reflected x-ray intensity changes proportionally to the magnetization of this element and, e.g., hystereses are easily measured element specifically. In contrast to the case of visible light, temperature dependent 4d-4f magneto-optical signals are not influenced by the thermal lattice expansion.
authors.affiliation: Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Starke
authors.forename: F
authors.initials: F
authors.lastname: Heigl
authors.forename: A
authors.initials: A
authors.lastname: Vollmer
authors.forename: M
authors.initials: M
authors.lastname: Weiss
authors.forename: G
authors.initials: G
authors.lastname: Reichardt
authors.forename: G
authors.initials: G
authors.lastname: Kaindl