Berlin 2005 – wissenschaftliches Programm
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TT: Tiefe Temperaturen
TT 23: Posters Superconductivity, Solids at Low Temperature
TT 23.18: Poster
Montag, 7. März 2005, 14:00–18:00, Poster TU D
Dynamical spin susceptibility in the d-density wave state: a comparison of theory and experiment — •Jan-Peter Ismer and Ilya Eremin — Institut für Theoretische Physik, Freie Universität Berlin, D-14195 Berlin, Germany
Inelastic neutron scattering (INS) experiments probing dynamical spin susceptibility in the pseudogap phase of the high-Tc cuprates are addressed in the framework of the ordered d-density wave(DDW) state. In particular, we analyze the formation of the resonance peak at the antiferromagnetic wave vector QAF=(π,π) and its dispersion in three different ordered states: d-wave superconductor (DSC), DDW state, and coexisting DDW and DSC states. Furthermore, we investigate the structure of the particle-hole continuum, the formation of so-called ’silent’ bands, and most interestingly, the behavior of the upward part of the resonance peak dispersion. The new features arising due to DDW ordering are discussed.