Herzig Sheinfux Hanan, Koppens Frank H L
ICFO-Institut de Ciencies Fotoniques, Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain.
ICREA-Institució Catalana de Recerca i Estudis Avançats, Barcelona, Spain.
Nano Lett. 2020 Oct 14;20(10):6935-6936. doi: 10.1021/acs.nanolett.0c03175. Epub 2020 Oct 5.
Two-dimensional materials stacked with a relative twist angle have been the focus point of tremendous interest in the condensed matter community. In the last four months, a theoretical prediction and four independent experimental works have demonstrated the tremendous impact these results can have on the nanophotonics community: the phonon polariton dispersion of twisted stacks of MoO crystals can range from hyperbolic to elliptic, depending on the twist angle and thicknesses. In this Perspective, we provide a fast introduction to this exciting new topic and explain the importance of these findings.
具有相对扭转角堆叠的二维材料一直是凝聚态物理领域极为关注的焦点。在过去的四个月里，一项理论预测和四项独立的实验工作已经证明了这些结果对纳米光子学领域可能产生的巨大影响：MoO晶体扭曲堆叠的声子极化激元色散可以从双曲线型到椭圆型变化，这取决于扭转角和厚度。在这篇综述文章中，我们对这个令人兴奋的新主题进行了快速介绍，并解释了这些发现的重要性。
