Dresden 2006 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 25: Correlated Electrons - Poster Session

TT 25.31: Poster

Mittwoch, 29. März 2006, 14:30–18:30, P1

Spectral properties of RVB superconductor — •Bernhard Edegger¹, Claudius Gros¹, and V.N. Muthukumar² — ¹Institut für Theoretische Physik, Universität Frankfurt, D-60438 Frankfurt, Germany — ²Department of Physics, City College of the City University of New York, New York, NY 10031

We use a Gutzwiller renormalized mean field theory to study properties of projected quasiparticles within the tJ model. We calculate the one-particle spectral function and discuss the relevance for tunneling and photoemmision spectroscopies in doped Mott insulators like the high T_C superconductors. Besides we consider incoherent excitations and emphasise their importance in describing the striking asymmetry seen in the tunneling experiments.