Phase Transitions for Cuboc Orders in Stacked Kagome Heisenberg Systems
| Autor: | Seki, Kouichi, Okunishi, Kouichi |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | J. Phys. Soc. Jpn. 87, 023001 (2018) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.7566/JPSJ.87.023001 |
| Popis: | Using the event-chain Monte Carlo (MC) algorithm, we investigate phase transitions of the stacked Kagome Heisenberg systems with classical vector spins including up to the 3rd-nearest-neighbor couplings. In particular, we focus on two types of non-coplanar spin orders ---cuboc1 and cuboc2 orders, both of which have twelve-sublattice structures accompanying the translational-symmetry breaking. We perform event-chain MC simulations up to L=72, where L represents the linear dimension of the stacked Kagome lattice, and then find that the cuboc1 transition shows 2nd-order-transition behaviors with a tendency to a weak-1st-order transition up to L=72, while the cuboc2 transition is basically described by the 1st-order transition. We then discuss the above transitions in connection with the effective Landau-Ginzburg-Wilson theory with the O(3)xO(3) symmetry. Comment: 4 pages, 6 figures |
| Databáze: | arXiv |
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