Topological phase transitions in frustrated magnets

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Date
2006-07-31
Authors
Southern, BW
Peles, A
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Abstract
The role of topological excitations in frustrated Heisenberg antiferromagnets between two and three spatial dimensions is considered. In particular, the antiferromagnetic Heisenberg model on a stacked triangular geometry with a finite number of layers is studied using Monte Carlo methods. A phase transition that is purely topological in nature occurs at a finite temperature for all film thicknesses. The results indicate that topological excitations are important for a complete understanding of the critical properties of the model between two and three dimensions.
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Keywords
TRIANGULAR LATTICE, MONTE-CARLO, HEISENBERG-ANTIFERROMAGNET, XY, SYSTEMS, ORDER, MODEL
Citation
Canadian Journal of Physics, JAN 2006; 84(6-7):517-522.