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Ultra-long-range Rydberg trimers with a repulsive two-body interaction
Ivan C H Liu1, Jovica Stanojevic, Jan M Rost
1Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, D-01187 Dresden, Germany.
Physical Review Letters
|June 13, 2009
Summary
Ultra-long-range diatomic molecules form with attractive interactions. Adding a second atom enables the creation of bound triatomic molecules, expanding possibilities in molecular physics.
Area of Science:
- Atomic and Molecular Physics
- Quantum Chemistry
Background:
- Ultra-long-range diatomic molecules can form when a ground-state atom and a Rydberg atom interact attractively.
- Repulsive interactions between ground-state atoms and Rydberg electrons prevent the formation of bound molecular states.
Purpose of the Study:
- To investigate the possibility of forming bound triatomic molecules.
- To explore the role of a second ground-state atom in molecular formation.
Main Methods:
- Theoretical modeling of atomic interactions.
- Quantum mechanical calculations of molecular potentials.
Main Results:
- A repulsive interaction between a ground-state atom and a Rydberg electron does not support bound states.
- The addition of a second ground-state atom can lead to the formation of a long-range bound triatomic molecule.
Conclusions:
- Bound triatomic molecules can be formed under conditions where diatomic molecules cannot.
- This finding expands the understanding of molecular formation and stability in Rydberg systems.
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