Regensburg 2010 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 24: SC: Properties, Electronic Structure, Mechanisms
TT 24.9: Vortrag
Mittwoch, 24. März 2010, 16:30–16:45, H19
The magnetic resonance mode in high-temperature superconductors — •Klaus W. Becker1 and Steffen Sykora1,2 — 1Institut für Theoretische Physik, Technische Universität Dresden, Germany — 2Department of Physics and Astronomy, Rutgers University, USA .
The origin of the magnetic resonance mode in cuprates, measured by inelastic neutron scattering, is still subject of controversy. In this talk, we investigate the resonance mode on the basis of the t-J model using a microscopic renormalization approach which is called projector based renormalization method (PRM). Thereby, the strong correlations are strictly obeyed. The approach was applied to the cuprates before in order to explain ARPES experiments in the pseudogap and in the superconducting region. The method also allows to evaluate the inelastic neutron scattering in the superconducting state of the cuprates. The theoretical results turn out to be in perfect agreement with the experimental findings.