期刊
NATURE COMMUNICATIONS
卷 6, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms8918
关键词
-
资金
- US Department of Energy under Laboratory Directed Research and Development Program at Los Alamos National Laboratory [20140309ER]
- National Security Administration of the US Department of Energy [DE-AC52-06NA25396]
- Army Research Office, MURI [W911NF-12-1-0476]
- National Science Foundation [PHY-1205838]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1205838] Funding Source: National Science Foundation
The geometric phase is shown to control the outcome of an ultracold chemical reaction. The control is a direct consequence of the sign change on the interference term between two scattering pathways (direct and looping), which contribute to the reactive collision process in the presence of a conical intersection (point of degeneracy between two Born-Oppenheimer electronic potential energy surfaces). The unique properties of the ultracold energy regime lead to an effective quantization of the scattering phase shift enabling maximum constructive or destructive interference between the two pathways. By taking the O + OH -> H + O-2 reaction as an illustrative example, it is shown that inclusion of the geometric phase modifies ultracold reaction rates by nearly two orders of magnitude. Interesting experimental control possibilities include the application of external electric and magnetic fields that might be used to exploit the geometric phase effect reported here and experimentally switch on or off the reactivity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据