Poster Session

Poster Session I (4pm-6pm CDT)

4:00 pm – 6:00 pm, Tuesday June 4 // Session D00

Topics:

Self-organized supersolidity in ion doped Helium droplets

Poster 119

Presenter: Juan Carlos Acosta Matos (Max Planck Institute for the Physics of Complex Systems)

Authors: Panos Giannakeas (Max Planck Institute for the Physics of Complex Systems), Matteo Ciardi (Institute for Theoretical Physics, Vienna University of Technology), Thomas Pohl (Institute for Theoretical Physics, Vienna University of Technology), Jan Michael Rost (Director of the division Finite Systems, Max Planck Institute for the Physics of Complex Systems)

It is well known that crystallized shells, of Helium atoms, a so called snowball, forms around the ion in the otherwise (super-)fluid Helium droplet [1]. Here, we show that for sufficiently large droplets a third regime appears between the snowball and the liquid one with a supersolid structure where the Helium density exhibits a periodic modulation of the particle density on a spherical shell. The periodic modulation emerges due to the inner shell snowball structure that provides a lattice substrate for the outer droplet shells yielding an accumulation of superfluid particles. To identify supersolidity in a geometrically confined scenario of a droplet we combine modified density functional theory (DFT), allowing us to describe large enough droplets, with a Gaussian Imaginary Time Dependent Hartree (G-ITDH)[2] method which traces the emergence of crystallized structures. Our approach works well as a comparison to Quantum Monte Carlo results [3] for smaller droplets reveals.

POSTERS (157)