论文标题
“真正的一维” Moi $ _3 $ van der waals纳米线中的元素激发的细节
Specifics of the Elemental Excitations in "True One-Dimensional" MoI$_3$ van der Waals Nanowires
论文作者
论文摘要
我们报告了依赖于极化的拉曼（Raman）的温度演变，该exfoliated Moi $ _3 $是一种带有“真正的一维”晶体结构的范德华材料，可以将其剥落至单个原子链中。几种拉曼特征的温度演化揭示了异常行为，表明磁性起源的相变。理论上的考虑表明，MOI $ _3 $是沿二聚链和链间螺旋式旋转订购的易于平面抗fiferromagnet。计算出的声子和磁子的频率与实验拉曼数据的解释一致。获得的结果阐明了MOI $ _3 $中语音和宏伟状态的细节，并为将来对这种独特的材料进行了强有力的动力，并具有潜在的Spintronic设备应用。
We report on the temperature evolution of the polarization-dependent Raman spectrum of exfoliated MoI$_3$, a van der Waals material with a "true one-dimensional" crystal structure that can be exfoliated to individual atomic chains. The temperature evolution of several Raman features reveals anomalous behavior suggesting a phase transition of a magnetic origin. Theoretical considerations indicate that MoI$_3$ is an easy-plane antiferromagnet with alternating spins along the dimerized chains and with inter-chain helical spin ordering. The calculated frequencies of the phonons and magnons are consistent with the interpretation of the experimental Raman data. The obtained results shed light on the specifics of the phononic and magnonic states in MoI$_3$ and provide a strong motivation for future study of this unique material with potential for spintronic device applications.
