论文标题
螺旋旋转液体的线条图
Line-Graph Approach to Spiral Spin Liquids
论文作者
论文摘要
交换相互作用之间的竞争能够在没有几何挫败感的两部分晶格上引起新的自旋相关性。一个原型的例子是螺旋旋转液体，它是相关的顺磁性状态，其特征在于亚维脱位传播载体。在这里，使用光谱图理论，我们表明，在两分晶格上的螺旋旋转液体可以通过非双分支的相应线形晶格上的邻居模型近似，从而扩大了可能支持螺旋旋转液相的候选材料的空间。作为插图，我们检查了在两种尖晶石化合物上执行的中子散射实验，Zncr $ _2 $ SE $ _4 $和CUINCR $ _4 $ SE $ _8 $，以证明这种新方法的可行性并暴露了其在实验实现中的可能限制。
Competition among exchange interactions is able to induce novel spin correlations on a bipartite lattice without geometrical frustration. A prototype example is the spiral spin liquid, which is a correlated paramagnetic state characterized by sub-dimensional degenerate propagation vectors. Here, using spectral graph theory, we show that spiral spin liquids on a bipartite lattice can be approximated by a further-neighbor model on the corresponding line-graph lattice that is non-bipartite, thus broadening the space of candidate materials that may support the spiral spin liquid phases. As illustrations, we examine neutron scattering experiments performed on two spinel compounds, ZnCr$_2$Se$_4$ and CuInCr$_4$Se$_8$, to demonstrate the feasibility of this new approach and expose its possible limitations in experimental realizations.
