论文标题
人工相对论分子
Artificial Relativistic Molecules
论文作者
论文摘要
我们在范德华晶体上制造由重原子铅组成的人造分子。 Pb原子在IRTE2形成簇的蜂窝电荷上层结构上模板，从二聚体到七聚体，包括苯环六聚体。隧道光谱和电子结构计算揭示了簇内异常相对论分子轨道的形成。自旋轨道耦合在形成这种狄拉克电子状态和通过减少adatom-substrate相互作用来稳定人工分子都是必不可少的。发现铅原子非常适合最大化的相对论效应。这项工作启动了新型二维顺序的使用，以指导前所未有的特性的人工分子的制造。
We fabricate artificial molecules composed of heavy atom lead on a van der Waals crystal. Pb atoms templated on a honeycomb charge-order superstructure of IrTe2 form clusters ranging from dimers to heptamers including benzene-shaped ring hexamers. Tunneling spectroscopy and electronic structure calculations reveal the formation of unusual relativistic molecular orbitals within the clusters. The spin-orbit coupling is essential both in forming such Dirac electronic states and stabilizing the artificial molecules by reducing the adatom-substrate interaction. Lead atoms are found to be ideally suited for a maximized relativistic effect. This work initiates the use of novel two dimensional orderings to guide the fabrication of artificial molecules of unprecedented properties.
