Square-Lattice Heisenberg Antiferromagnet at Very Large Correlation Lengths

Heisenberg Antiferromagnet on Square-Kagomé Lattice: Resonating Valence Bond Description

The Heisenberg antiferromagnet on the square-kagomé lattice

We discuss the ground state, the low-lying excitations as well as high-field thermodynamics of the Heisenberg antiferromagnet on the two-dimensional square-kagomé lattice. This magnetic system belongs to the class of highly frustrated spin systems with an infinite non-trivial degeneracy of the classical ground state as it is also known for the Heisenberg antiferromagnet on the kagomé and on the...

Heisenberg Antiferromagnet on a Triangular Lattice

The 3-State Square-Lattice Potts Antiferromagnet at Zero Temperature

We study the 3-state square-lattice Potts antiferromagnet at zero temperature by a Monte Carlo simulation using the Wang-Swendsen-Kotecký cluster algorithm, on lattices up to 1024 × 1024. We confirm the critical exponents predicted by Burton and Henley based on the height representation of this model.

Magnetic excitation spectrum of the square lattice S=1/2 Heisenberg antiferromagnet K2V3O8

M. D. Lumsden,1 S. E. Nagler,1 B. C. Sales,2 D. A. Tennant,3,4,5 D. F. McMorrow,6,4,7 S.-H. Lee,8,9 and S. Park10,9 1Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 2Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 3Hahn-Meitner Institution, Glienicker Strasse 100, Berlin D-14109, German...