| Autor: |
Desai, Nisheeta, Kaul, Ribhu K. |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Phys. Rev. Lett. 123, 107202 (2019) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.123.107202 |
| Popis: |
We introduce a strategy to write down lattice models of spin rotational symmetric Hamiltonians with arbitrary spin-$S$ that are Marshall positive and can be simulated efficiently using world line Monte Carlo methods. As an application of our approach we consider a square lattice $S=1$ model for which we design a $3\times 3$ - spin plaquette interaction. By numerical simulations we establish that our model realizes a novel "Haldane nematic" phase that breaks lattice rotational symmetry by the spontaneous formation of Haldane chains, while preserving spin rotations, time reversal and lattice translations. By supplementing our model with a two-spin Heisenberg interaction, we present a study of the transition between N\'eel and Haldane nematic phase, which we find to be of first order. |
| Databáze: |
arXiv |
| Externí odkaz: |
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