论文标题
在碱基质上的薄He-4膜：He-3原子在哪里结合？
Thin He-4 films on alkali substrates: where do He-3 atoms bind?
论文作者
论文摘要
首先要通过第一个原理计算机模拟研究了He-3原子的结合状态在一个薄弱的超级流体He-4film附近的较弱吸引人的基板附近发生。即使在最弱的基板的情况下，也没有证据表明这种约束状态，即CS；无论HE-4膜的厚度如何，单个He-3原子总是与自由的He-4表面结合。在这项工作中计算出的HE-4密度曲线与导致底物附近He-3结合状态的密度功能方法所产生的HE-4密度曲线的比较，表明后者可能没有对吸附的He-4膜的足够准确的结构描述。
The possible occurrence of bound states of He-3 atoms in the vicinity of a weakly attractive substrate coated with a thin superfluid He-4film is investigated by first principle computer simulations. No evidence is seen of such bound states, even in the case of the weakest substrate, i.e., Cs; a single He-3 atom always binds to the free He-4 surface, regardless of the thickness of the He-4 film. A comparison of He-4 density profiles computed in this work with those yielded by the Density Functional approach that led to the prediction of He-3 bound states near the substrate, shows that the latter may not have afforded a sufficiently accurate structural description of the adsorbed He-4 film.
