论文标题
在经典的Kagome-lattice Heisenberg抗FiferRomagnet中，通过自旋晶格耦合诱导的诺神经性和分数磁化高原
Nematicity and fractional magnetization plateaus induced by spin-lattice coupling in the classical kagome-lattice Heisenberg antiferromagnet
论文作者
论文摘要
我们使用改进的Monte Carlo更新研究了自旋晶格耦合（SLC）对经典Kagome-lattice Heisenberg Antiferromagnet（KHAF）的磁性的影响。晶格模式由爱因斯坦站点的声子表示，除最近的邻居二次相互作用外，还引入了有效的邻邻旋转相互作用。在弱的SLC中，宏观变性的共面基态保持在零场，而$ \ sqrt {3} \ times \ times \ sqrt {3} $订购的相位伴随着1/3-magnetization plateau，则在外部磁场中出现。在强大的SLC中，我们在零字段找到了列表，并且与$ 3 \ times 3 $ collinear订单相关的1/9磁化高原。在1/9和1/3-Plateau状态之间的相变近，单个自旋翻转中的奇迹性实际上是损坏的，并且会出现缓慢的动力学。我们建议将具有强SLC的相关KHAF在基于尖晶石的材料中实现。
We investigate the effect of spin-lattice coupling (SLC) on the magnetic properties of the classical kagome-lattice Heisenberg antiferromagnet (KHAF) using improved Monte Carlo updates. The lattice modes are represented by Einstein site phonons, which introduce effective further-neighbor spin interactions in addition to the nearest-neighbor biquadratic interactions. In the weak SLC, the macroscopically degenerate coplanar ground state remains at zero field, while a $\sqrt{3} \times \sqrt{3}$ ordered phase accompanied by a 1/3-magnetization plateau appears in external magnetic fields. In the strong SLC, we find a nematic order at zero field and a 1/9-magnetization plateau associated with a $3 \times 3$ collinear order. Near the phase transition between the 1/9- and 1/3-plateau states, the ergodicity in the single spin flip is practically broken, and slow dynamics appear. We propose that relevant KHAFs with strong SLC would be realized in spinel-based materials.
