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DY: Fachverband Dynamik und Statistische Physik

DY 29: Poster II

DY 29.43: Poster

Donnerstag, 28. Februar 2008, 16:00–18:00, Poster C

Anisotropic three-dimensional Heisenberg antiferromagnets in a field — •Georg Bannasch and Walter Selke — Institut für Theoretische Physik, RWTH Aachen

Three-dimensional anisotropic Heisenberg antiferromagnets, the xxz-model as well as variants, in a field are investigated. Based on ground state considerations and Monte Carlo techniques, the role of biconical fluctuations and structures is studied. Results are compared to findings on two-dimensional anisotropic Heisenberg antiferromagnets [1,2,3,4].

References: [1] M. Holtschneider, W. Selke, and R. Leidl, Phys. Rev. B 72, 064443 (2005) [2] C.G. Zhou, D.P. Landau, and T.C. Schulthess, Phys. Rev. B 74, 064407 (2006) [3] M. Holtschneider, S. Wessel, and W. Selke, Phys. Rev. B 75, 224417 (2007) [4] A. Pelissetto and E. Vicari, Phys. Rev. B 76, 024436 (2007)