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Berlin 2015 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 71: Correlated Electrons: Poster Session

TT 71.77: Poster

Mittwoch, 18. März 2015, 15:00–18:00, Poster B

Kinks and low-energy dynamics of correlated electron systems — •Markus Greger and Marcus Kollar — Theoretische Physik III, Zentrum für elektronische Korrelationen und Magnetismus, Universität Augsburg

We present a physical interpretation of kinks in the effective dispersion seen in angle-resolved photoemission spectroscopy (ARPES) within the framework of dynamical mean-field theory (DMFT). We relate the energy scale of kinks to the binding energy of the local quasiparticles, i.e., Kondo singlet. This interpretation of kinks provides a direct connection to an important intrinsic property of the quasiparticles in Fermi liquids. The Kondo singlet wavefunction is further characterized using the density matrix renormalization group (DMRG).

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