Ab initio study of He-He interactions in homogeneous electron gas
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- 作者：Jinlong Wang ; Liang-Liang Niu ; Ying Zhang<sup> ; sup><sup>zhyi@buaa.edu.cnsup>
- 关键词：Helium ; Electron gas ; Ab initio ; Self-trapping
- 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
- 出版年：2017
- 出版时间：15 February 2017
- 年：2017
- 卷：393
- 期：Complete
- 页码：140-143
- 全文大小：1430 K
- 卷排序：393
文摘
Helium atoms interact via the He induced Friedel oscillations of electron densities. He-He global binding energy minimum of ∼−0.09 eV is reached at an optimal electron density of 0.04 e/Å3, corresponding to an optimal He-He separation of ∼1.7 Å. The present results can qualitatively interpret the well-known He self-trapping behavior in metals.