Dresden 2003 – wissenschaftliches Programm
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TT: Tiefe Temperaturen
TT 11: Postersitzung II (Metall-Isolator-Überg
änge, Phasenüberg
änge in Quantensystemen, Theorie: Systeme korrelierter Elektronen)
TT 11.15: Poster
Dienstag, 25. März 2003, 14:30–19:00, P2c, P2d
Anomalous soft x-ray scattering: Spectroscopically-resolved structure studies — •C. Schüßler-Langeheine1, E. Schierle2, M. Haverkort1, H. Ott2, J. Schlappa1, Z. Hu1, A. Starodubov2, M. Braden1, G. Kaindl2, E. Weschke2, and L. H. Tjeng1 — 1II. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln — 2Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin
Resonant anomalous scattering combines scattering and spectroscopy to a technique that probes the electronic structure selectively on sites with certain periodicities. Such a method is particularly suited for the investigation of ordering phenomena as they are observed in correlated systems. With modern bright synchrotron-radiation sources and high-resolution beamlines available, scattering can be performed by selectively exciting electrons in a particular state. Though the principle of the measurement is easy to understand, the data analysis is quite involved, because effects like the strong change of sample optical properties across the resonance have to be taken into account. We report about a project to create a sound footing for the data analysis by investigating simple model systems.
This work is supported by the DFG within the SFB 608, TP C4.