论文标题
J1-J2 Heisenberg模型的拓扑不同的自旋障碍阶段在蜂窝状晶格上
Topologically different spin disorder phases of the J1-J2 Heisenberg model on the honeycomb lattice
论文作者
论文摘要
在过去的十年中，在Honeycomb J1-J2 Heisenberg模型上搜索旋转液体。在本文中，我们通过引入最接近的邻居和最新纽布键参数来研究J1-J2海森贝格模型的拓扑特性。我们发现，在自旋疾病状态0.2 <j2/j1 <0.5：对于J2/J1 <0.32中，该系统是一种零升华旋转液体，是拓扑既琐碎且无骨；对于J2/J1> 0.32，它是一种Pi-Flux手性旋转液体，是拓扑非平地和间隙。这些结果表明，在Honeycomb J1-J2 Heisenberg模型中存在两个不同的自旋障碍阶段。
Searching for spin liquids on the honeycomb J1-J2 Heisenberg model has been attracting great attention in the past decade. In this Paper we investigate the topological properties of the J1-J2 Heisenberg model by introducing nearest-neighbour and next-nearest-neighbour bond parameters. We find that there exist two topologically different phases in the spin disordered regime 0.2<J2/J1<0.5: for J2/J1<0.32, the system is a zero-flux spin liquid which is topological trivial and gapless; for J2/J1>0.32, it is a pi-flux chiral spin liquid, which is topological nontrivial and gapped. These results suggest that there exist two topologically different spin disorder phases in honeycomb J1-J2 Heisenberg model.
