论文标题
P轨道扁平带和电子蜂窝状晶状体中的狄拉克锥
p Orbital flat band and Dirac cone in the electronic honeycomb lattice
论文作者
论文摘要
理论预测，蜂窝状晶格中的平面PX，PY轨道会导致新的且潜在的量子电子相。到目前为止，仅在光学晶格中的冷原子以及光子晶体中的光和激子 - 摩尔子中实现了p轨道带。对于电子而言，由于天然电子蜂窝晶格（例如石墨烯和硅）表现出强烈的S-P杂交，因此很难进入平面p轨道物理。在这里，我们报告了在扫描隧道显微镜中在Cu（111）表面上制备的电子蜂窝状晶格，通过设计，该图显示（几乎）（几乎）纯轨道带，包括P轨道平坦带和Dirac锥。
Theory anticipates that the in-plane px, py orbitals in a honeycomb lattice lead to new and potentially useful quantum electronic phases. So far, p orbital bands were only realized for cold atoms in optical lattices and for light and exciton-polaritons in photonic crystals. For electrons, in-plane p orbital physics is difficult to access since natural electronic honeycomb lattices, such as graphene and silicene, show strong s-p hybridization. Here, we report on electronic honeycomb lattices prepared on a Cu(111) surface in a scanning tunneling microscope that, by design, show (nearly) pure orbital bands, including the p orbital flat band and Dirac cone.
