论文标题
边缘铁石墨烯的边缘铁磁状态中的分数化旋转激发：铁磁luttinger液体的特征
Fractionalized Spin Excitations in the Edge Ferromagnetic State of Graphene: Signature of the Ferromagnetic Luttinger Liquid
论文作者
论文摘要
来自传统磁有序状态的基本激发，例如铁磁体和抗铁磁铁。在这里，我们详细阐述了一种完全没有定义明确的木蛋白的情况，并且自旋激发光谱在巡回边缘铁石墨烯的流动边缘铁磁态中显示出整个连续体，这是由平板边缘电子状态引起的。基于对纠缠熵和有限尺寸分析的进一步研究，我们表明，除石膏部分以外的连续体是由从木蛋白中解脱的Spin-1/2纺纱子产生的。磁性有序状态下的Spinon连续体归因于此边缘铁磁体中的铁磁性Luttinger液体。通过使用数值精确的对角线化方法进行研究，并将相互作用的汉密尔顿相互作用投影到平坦带上。
The elementary excitations from the conventional magnetic ordered states, such as ferromagnets and antiferromagnets, are magnons. Here, we elaborate a case where the well-defined magnons are absent completely and the spin excitation spectra exhibit an entire continuum in the itinerant edge ferromagnetic state of graphene arising from the flatband edge electronic states. Based on the further studies of the entanglement entropy and finite-size analysis, we show that the continuum other than the Stoner part results from the spin-1/2 spinons deconfined from magnons. The spinon continuum in a magnetically ordered state is ascribed to a ferromagnetic Luttinger liquid in this edge ferromagnet. The investigation is carried out by using the numerical exact diagonalization method with a projection of the interacting Hamiltonian onto the flat band.
