论文标题
Kitaev旋转轨道双层及其Moiré超级晶格
Kitaev spin-orbital bilayers and their moiré superlattices
论文作者
论文摘要
我们确定了具有层间相互作用（J）的双层，Yao-Lee自旋轨道模型的相图，用于几个堆栈和Moiré超级晶格。对于AA堆叠，在有限的JC处出现了间隙的Z2量子自旋液相。我们表明，这个阶段在良好控制的大J限制中幸存下来，在该极限范围内出现了各向同性蜂窝状折叠代码。对于Moiré超晶格，有限的Q Inter层杂交稳定。这连接了不等的狄拉克点，有效地“不互换”了系统。因此，我们的研究提供了对双层旋转轨道基塔耶材料的自旋液相的见解。
We determine the phase diagram of a bilayer, Yao-Lee spin-orbital model with inter-layer interactions (J), for several stackings and moiré superlattices. For AA stacking, a gapped Z2 quantum spin liquid phase emerges at a finite Jc. We show that this phase survives in the well-controlled large-J limit, where an isotropic honeycomb toric code emerges. For moiré superlattices, a finite-q inter-layer hybridization is stabilized. This connects inequivalent Dirac points, effectively `untwisting' the system. Our study thus provides insight into the spin-liquid phases of bilayer spin-orbital Kitaev materials.
