论文标题
波动诱导的一阶相变，类似于基塔夫的$ d^4 $ honeycomb磁铁
Fluctuation-induced first order phase transitions in Kitaev-like $d^4$ honeycomb magnet
论文作者
论文摘要
我们从数值上研究了Kitaev Honeycomb模型的骨式类似物，该模型是$ 4D^4/5D^4 $量子磁铁的最小模型，带有蜂蜜晶状体几何形状。我们通过Landau理论分析和量子蒙特卡洛模拟的结合来构建其相图。特别是，我们表明，顺磁性状态和磁有序状态之间的相边界通常是波动引起的一阶相变。我们的结果可能适用于Ru $^{4+} $ - 和IR $^{5+} $ - 基于蜂窝磁铁。
We study numerically a bosonic analog of the Kitaev honeycomb model, which is a minimal model for $4d^4/5d^4$ quantum magnets with honeycomb lattice geometry. We construct its phase diagram by a combination of Landau theory analysis and quantum Monte Carlo simulations. In particular, we show that the phase boundaries between the paramagnetic state and magnetically ordered states are generically fluctuation-induced first order phase transitions. Our results are potentially applicable to Ru$^{4+}$- and Ir$^{5+}$-based honeycomb magnets.
