论文标题
He-3原子在水晶和超氟He-4的界面的绑定状态
Bound state of a He-3 atom at the interface of crystal and superfluid He-4
论文作者
论文摘要
理论上通过第一原理量子蒙特卡洛模拟研究了HE-4共存的晶体和超流体阶段之间界面上的He-3原子的结合状态。我们认为固体/超氟He-4界面以及在有吸引力的底物上形成的He-4固体层的界面的情况下。据观察，He-3结合状态被尖锐地定位于固体和液体之间中间区域中的明确定义的，准2D的He-4。 He-3原子所居住的层显示了原子定位和量子力学交换的有趣相互作用。正如先前的研究所建议的那样，不一定是第一个“非固体”层，并且受底物的吸引力强度的影响。
The bound state of a He-3 atom at the interface between coexisting crystalline and superfluid phases of He-4 is studied theoretically by means of first principle Quantum Monte Carlo simulations. We consider both the case of a solid/superfluid He-4 interface, as well as that of a few solid layers of He-4 forming on an attractive substrate. It is observed that the He-3 bound state is sharply localized in a well-defined, quasi-2D layer of He-4 in the region intermediate between the solid and the liquid. The layer in which the He-3 atom resides displays an intriguing interplay of atomic localization and quantum-mechanical exchanges; is not necessarily the first "non-solid" layer, as suggested in previous studies, and it is affected by the attractive strength of the substrate.
