Three-body nonadditive forces between spin-polarized alkali-metal atoms -: art. no. 054702

被引：70

作者：

Soldán, P ^{[1
]}

Cvitas, MT ^{[1
]}

Hutson, JM ^{[1
]}

机构：

[1] Univ Durham, Dept Chem, Durham DH1 3LE, England

来源：

PHYSICAL REVIEW A | 2003年 / 67卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.67.054702

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Three-body nonadditive forces in systems of three spin-polarized alkali-metal atoms (Li, Na, K, Rb, and Cs) are investigated using high-level ab initio calculations. The nonadditive forces are found to be large, especially near the equilateral equilibrium geometries. For Li, they increase the three-atom potential well depth by a factor of 4 and reduce the equilibrium interatomic distance by 1.07 Angstrom. The nonadditive forces originate principally from chemical bonding arising from sp mixing effects.

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页数：4

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