Schedule Logo
Poster Session

Poster Session II

4:00 pm – 6:00 pm, Wednesday June 18 Session H00 Oregon Convention Center, Exhibit Hall E
Topics:
PrevNext

Dynamical rigidity of dipolar supersolids

Poster 114
Presenter: George Bougas (Missouri University of Science & Technology)
Authors: Simeon Mistakidis (Missouri University of Science and Technology), Hossein Sadeghpour (Harvard - Smithsonian Center for Astrophysics)

Supersolidity is an exotic phase-of-matter[1], recently realized with long-range

anisotropically interacting dipolar quantum gases[2], where droplet crystals exist atop a

superfluid substrate. Here, we address the solidity and phase rigidity of 164Dy quasi-1D

supersolids by initially separating them via a central potential barrier which is

subsequently released triggering their counterflow. The supersolid stripes undergo a

decaying oscillatory motion, which can be qualitatively captured by a model of coupled

springs. The decay is found to be proportional to the superfluid background density. The

phase rigidity of supersolids is monitored by imprinting a phase gradient across them.

The ensuing droplet peaks drift in unison, while featuring an out-of-phase motion with

their superfluid background. The drift speed can be controlled through the imprinted

phase gradient. Generalizations to quasi-2D supersolids are elucidated accompanied by

the formation of bulk and surface patterns.

References:

[1] A. J. Leggett, Phys. Rev. Lett. 25, 1543 (1970).

[2] L. Chomaz et al, Rep. Prog. Phys. 86, 026401 (2022).

Funding acknowledgement

We acknowledge support from the Missouri Science and Technology, Department of Physics, Startup fund, as well as support for ITAMP by the NSF.

POSTERS (156)