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Regensburg 2004 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 28: FV-internes Symposium ”Theoretical Modeling of Materials with Correlated Electrons”

TT 28.1: Hauptvortrag

Donnerstag, 11. März 2004, 14:00–14:25, H20

Opportunities and challenges from electron spectroscopy for realistic correlated electron theory — •J. W. Allen — Randall Laboratory of Physics, University of Michigan, Ann Arbor, MI 48109, USA

In the past 25 years electron spectroscopy has developed steadily to take its place with optical and Raman spectroscopy and with neutron scattering as an established general technique for studying the electronic structure of condensed matter systems. Already the current quality of available data on strongly correlated electron systems calls for theory beyond that of the model Hamiltonian and the need is expected to increase with further improvements in the experimental technique. I will give current examples in the context of the elucidation of Landau Fermi liquid theory quasi-particles and their absence in photoemission spectra.

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