论文标题
键依赖磁相互作用的散射特征
Scattering Signatures of Bond-Dependent Magnetic Interactions
论文作者
论文摘要
键依赖性的磁相互作用可以产生外来相，例如Kitaev旋转液体状态。实验确定债券依赖性相互作用的值是一个具有挑战性但至关重要的问题。在这里，我表明，在三角形和蜂窝状晶格上，每个允许的对称性允许最近的邻里相互作用在顺磁性中子二句话数据中具有独特的签名，并且此类数据包含足够的信息，可以通过不受约束的拟合来确定旋转的汉密尔顿（Spin Hamiltonian）。此外，我表明通常可以从粉末平均数据中提取债券依赖性相互作用。这些结果促进了对未显示常规磁有序的材料的自旋汉密尔顿人的实验确定。
Bond-dependent magnetic interactions can generate exotic phases such as Kitaev spin-liquid states. Experimentally determining the values of bond-dependent interactions is a challenging but crucial problem. Here, I show that each symmetry-allowed nearest-neighbor interaction on triangular and honeycomb lattices has a distinct signature in paramagnetic neutron-diffraction data, and that such data contain sufficient information to determine the spin Hamiltonian unambiguously via unconstrained fits. Moreover, I show that bond-dependent interactions can often be extracted from powder-averaged data. These results facilitate experimental determination of spin Hamiltonians for materials that do not show conventional magnetic ordering.
