Christian Fey

Stretching and bending dynamics in triatomic ultralong-range Rydberg molecules

We investigate polyatomic ultralong-range Rydberg molecules consisting of three ground-state atoms bound to a Rydberg atom via

A comparative analysis of binding in ultralong-range Rydberg molecules

s

Control of multiple excited image states around segmented carbon nanotubes

- and

Highly excited electronic image states of metallic nanorings

p

Alignment of s-state Rydberg molecules in magnetic fields.

-wave interactions. By employing the finite basis set representation of the unperturbed Rydberg electron Greens function we reduce the computational effort to solve the electronic problem substantially. This method is subsequently applied to determine the potential energy surfaces of triatomic systems in electronic

Effective three-body interactions in Cs(

s

6s

- and

)-Cs(

p

nd

-Rydberg states. Their molecular geometry and resulting vibrational structure are analyzed within an adiabatic approach that separates the vibrational bending and stretching dynamics. This procedure yields information on the radial and angular arrangement of the nuclei and indicates in particular that kinetic couplings between bending and stretching modes induce a linear structure in triatomic

) Rydberg trimers.

l=0