Dresden 2009 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 33: Postersession Correlated Electrons: Metal Insulator Transition, Spin Systems and Itinerant Magnets
TT 33.15: Poster
Mittwoch, 25. März 2009, 14:00–18:00, P1A
Spin-1 anisotropic Heisenberg antiferromagnets — •David Peters1, Ian McCulloch2, and Walter Selke1 — 1RWTH Aachen University and JARA-SIM, Germany — 2The University of Queensland, Australia
Intricate phase diagrams of spin-1 Heisenberg antiferromagnets with exchange and single-ion anisotropy are studied using mainly density matrix renormalization group techniques.
Various phases are identified, including antiferromagnetic, spin-liquid (or spin-flop), supersolid (or biconical), and ferromagnetic phases. Results are compared to recent findings on related quantum models and to properties of corresponding classical spin systems.
Funded by the Excellence Initiative of the German federal and state governments.