Novel local symmetries and chiral-symmetry-broken phases in S=(1/2 triangular-lattice Heisenberg model
- 27 November 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 63 (22), 2524-2527
- https://doi.org/10.1103/physrevlett.63.2524
Abstract
Using a non-mean-field approach the triangular lattice S=(1/2 Heisenberg antiferromagnet with nearest- and next-nearest-neighbor coupling is shown to undergo an Ising-type phase transition into a chiral symmetry broken phase (Kalmeyer-Laughlin–like state) at small T. Removal of next-nearest-neighbor coupling introduces a local symmetry, thereby suppressing any finite-T chiral order.
Keywords
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