论文标题
探测到连贯的2D近代晶格的相变
Probing the phase transition to a coherent 2D Kondo lattice
论文作者
论文摘要
密切相关的材料表现出是由电子之间的强相关性引起的奇特电子状态。维度提供了调谐旋钮，因为向下变薄至原子厚度会减少筛选效果并增强电子相关性。在这项工作中，通过将1T-TAS2层堆叠在2H-TAS2晶体上，由弱范德华的相互作用绑定，从而创建了一个2D Kondo晶格。通过使用高分辨率扫描隧道光谱和密度函数理论，我们明确地证明了从较高温度下存在的独立近密歇根杂质的集合中形成了2D近代晶格。在范德华异质结构中创建2D Kondo Lattices的可能性为探索非常规金属，磁性和超导状态的探索铺平了道路。
Strongly correlated materials exhibit exotic electronic states arising from the strong correlation between electrons. Dimensionality provides a tuning knob because thinning down to atomic thickness reduces screening effects and enhances electron correlations. In this work, a 2D Kondo lattice has been created by stacking a layer of 1T-TaS2 on a 2H-TaS2 crystal, which are bound by weak van der Waals interactions. By using high-resolution scanning tunnelling spectroscopy and density functional theory, we unambiguously demonstrate the formation of a 2D Kondo lattice from an ensemble of independent Kondo impurities present at higher temperatures. The possibility to create 2D Kondo lattices in van der Waals heterostructures paves the way for the exploration of unconventional metallic, magnetic and superconducting states not present in more standard correlated materials.
