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

被引：68
|
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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