Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 19: Ultra-cold atoms, ions and BEC I (joint session A/Q)
Q 19.7: Vortrag
Dienstag, 15. März 2022, 12:00–12:15, A-H2
Pattern formation in quantum ferrofluids: From supersolids to superglasses — •Jens Hertkorn1, Jan-Niklas Schmidt1, Mingyang Guo1, Fabian Böttcher1, Kevin S. H. Ng1, Sean D. Graham1, Paul Uerlings1, Tim Langen1, Martin Zwierlein2, and Tilman Pfau1 — 15. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Germany — 2MIT-Harvard Center for Ultracold Atoms, Research Laboratory of Electronics, and Department of Physics, Massachusetts Institute of Technology, USA
Pattern formation is a ubiquitous phenomenon observed in nonlinear and out-of-equilibrium systems. In equilibrium, ultracold dipolar quantum gases have been shown to host superfluid quantum droplet patterns, which realize a supersolid phase. Here we theoretically study the phase diagram of such quantum ferrofluids in oblate trap geometries and discover a wide range of exotic states of matter. Beyond the supersolid droplet regime, we find crystalline honeycomb and amorphous labyrinthine states with strong density connections. These patterns, combining superfluidity with a spontaneously broken spatial symmetry, are candidates for a new type of supersolid and superglass, respectively. The stabilization through quantum fluctuations allows one to find these patterns for a wide variety of trap geometries, interaction strengths, and atom numbers. Our study illuminates the origin of the various possible morphologies of quantum ferrofluids, highlights their emergent supersolid and superglass properties and shows that their occurrence is generic of strongly dipolar interacting systems.