Skyrmion ground states of rapidly rotating few-fermion systems

• Verfasst von: Palm, Lukas [VerfasserIn]
• Verfasst von: Grusdt, Fabian [VerfasserIn]
• Verfasst von: Preiss, Philipp [VerfasserIn]
• Titel: Skyrmion ground states of rapidly rotating few-fermion systems
• Verf.angabe: L. Palm, F. Grusdt and P.M. Preiss
• E-Jahr: 2020
• Jahr: 13 August 2020
• Umfang: 11 S.
• Illustrationen: Illustrationen
• Fussnoten: Gesehen am 24.09.2020
• Titel Quelle: Enthalten in: New journal of physics
• Ort Quelle: [Bad Honnef] : Dt. Physikalische Ges., 1999
• Jahr Quelle: 2020
• Band/Heft Quelle: 22(2020,8) Artikel-Nummer 083037, 11 Seiten
• ISSN Quelle: 1367-2630
• DOI: doi:10.1088/1367-2630/aba30e
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1733699600

Abstract

We show that ultracold fermions in an artificial magnetic field open up a new window to the physics of the spinful fractional quantum Hall (FQH) effect. We numerically study the lowest energy states of strongly interacting few-fermion systems in rapidly rotating optical microtraps. We find that skyrmion-like ground states with locally ferromagnetic, long-range spin textures emerge. To realize such states experimentally, rotating microtraps with higher-order angular momentum components may be used to prepare fermionic particles in a lowest Landau level. We find parameter regimes in which skyrmion-like ground states should be accessible in current experiments and demonstrate an adiabatic pathway for their preparation in a rapidly rotating harmonic trap. The addition of long range interactions will lead to an even richer interplay between spin textures and FQH physics.