Regensburg 2010 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 4: Magnetic Coupling Phenomena/ Exchange Bias
MA 4.9: Vortrag
Montag, 22. März 2010, 13:00–13:15, H22
Magnetic circular dichroism in the angular distribution of electrons emitted from buried layers observed by hard X-ray photoelectron spectroscopy. — •G. Stryganyuk1, E. Ikenaga2, X. Kozina1, S. Ouardi1, T. Sugiyama2, N. Kawamura2, M. Suzuki2, K. Kobayashi3, K. Inomata4, M. Yamamoto5, C. Felser1, and G.H. Fecher1 — 1Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg - University, Mainz, Germany — 2Japan Synchrotron Radiation Research Institute, SPring-8, Hyogo, Japan — 3National Institute for Materials Science, SPring-8, Hyogo, Japan — 4NIMS, Tsukuba 305-0047, Japan — 5Hokkaido University, Sapporo, Japan
This work reports on measurements of the magnetic dichroism in photoemission from core levels and valence band of magnetised buried thin films. The high bulk sensitivity of hard X-ray photoelectron spectroscopy allows to study the magnetic multilayers. High resolution photoelectron spectroscopy was performed with an excitation energy of hν=7.938 keV. The circularly polarised photons were produced by an in-vacuum phase retarder at undulator BL-47XU beamline of SPring-8. The experiments were performed on exchange biased magnetic layers covered by insulators of 1 nm to 3 nm thickness. Two types of structures were used with the MnIr (10 nm) exchange bias layer either on top or below the ferromagnetic layer.
This work is financially supported by DfG-JST (FE633/6-1).