A gallery of trilobitelike ghost bonds in Rydberg molecules shown as isosurfaces of electronic probability, cut away to reveal the inner structure. Selected for a Synopsis in Physics and an Editors’ Suggestion.

From the article:

Theoretical Prediction of the Creation and Observation of a Ghost Trilobite Chemical Bond
Matthew T. Eiles, Zhengjia Tong, and Chris H. Greene
Phys. Rev. Lett. 121, 113203 (2018)

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