Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2001-11-05
Can.J.Phys. 79 (2001) 1447-1458
Physics
Condensed Matter
Statistical Mechanics
Paper presented at Highly Frustrated Magnetism (HFM) 2000 Conference at Waterloo, to appear in Can. J. Phys
Scientific paper
10.1139/cjp-79-11-12-1447
``Chirality'' is a multispin quantity representing the sense or the handedness of the noncollinear spin structures induced by spin frustration. Recent studies have revealed that the chirality often plays an important role in the ordering of certain frustrated magnets. Here I take up two such examples, stacked-triangular antiferromagnets and spin glasses, where the inherent chiral degree of freedom affects underlying physics and might lead to novel ordering phenomena. The first topic is the criticality of the magnetic phase transition of vector (i.e., XY or Heisenberg) antiferromagnets on the three-dimensional stacked-triangular lattice. The second topic is the nature of the spin-glass ordering. I will review the recent theoretical and experimental works on these topics, with particular emphasis on the important role played by the chirality.
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