论文标题
晶体厚度和平面各向异性的相互作用以及rese $ _ {2} $中的Quasi One尺寸电子特征的演变
Interplay of crystal thickness and in-plane anisotropy and evolution of quasi-one dimensional electronic character in ReSe$_{2}$
论文作者
论文摘要
我们使用纳米角度分辨的光发射光谱和密度功能理论研究了$ _ {2} $晶体的价带结构。在垂直于rhenium链的方向上的顶价带的宽度随着层数减少而降低，从大容量的280 meV到单层的61 meV。这表明在层间耦合的变化中诱导的面内各向异性增加，并提出在几层二甲藻中的电子状态逐渐增加一维特征。
We study the valence band structure of ReSe$_{2}$ crystals with varying thickness down to a single layer using nanoscale angle-resolved photoemission spectroscopy and density functional theory. The width of the top valence band in the direction perpendicular to the rhenium chains decreases with decreasing number of layers, from 280 meV for the bulk to 61 meV for monolayer. This demonstrates increase of in-plane anisotropy induced by changes in the interlayer coupling and suggests progressively more one-dimensional character of electronic states in few-layer rhenium dichalcogenides.
