论文标题
在扭曲的基塔夫双层中出现的超魔法歧管
Emergent Hyper-Magic Manifold in Twisted Kitaev Bilayers
论文作者
论文摘要
由于发现各种材料（例如Rucl3），kitaev量子自旋液体一直是强烈研究工作的重点，这些材料近似于它们有趣的物理学。在本文中，我们在扭曲的Kitaev双层中出现的Moir'E超级晶格构建了平均场近似，以相应的双层溶液。我们表明，在超级晶格的迷你奶油区域定义的脱合纺纱子的带结构已被大大修改。该系统表现出一个超魔法的歧管：一系列几乎完美的片段出现在最低间隙以上的能量上，表现出非常大的（旋转）状态密度，可能会通过实验进行探测。有趣的是，平坦的特征状态表现出类似于kagome晶格波形的定位。
Kitaev quantum spin liquids have been the focus of intense research effort thanks to the discovery of various materials (e.g., RuCl3) that approximate their intriguing physics. In this paper we construct a mean-field approximation for a moir`e superlattice emerging in twisted Kitaev bilayers in terms of solutions of commensurate bilayers. We show that the band structure of deconfined spinons, defined on the mini-Brillouin zone of the superlattice, is greatly modified. The system exhibits a hyper-magic manifold: a series of nearly perfectly-flat bands appear at energies above the lowest gap, exhibiting a very large (spinon) density of states that could potentially be probed experimentally. Intriguingly, flat-band eigenstates exhibit a localization akin to wavefunctions of Kagome lattices.
