Skyrmion ground states of rapidly rotating few-fermion systems
| Autor: | Lukas Palm, Fabian Grusdt, Philipp M. Preiss |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Condensed matter physics Skyrmion FOS: Physical sciences General Physics and Astronomy Quantum simulator Landau quantization Fermion Quantum Hall effect Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 01 natural sciences 010305 fluids & plasmas Quantum Gases (cond-mat.quant-gas) Ultracold atom 0103 physical sciences Fractional quantum Hall effect Condensed Matter - Quantum Gases 010306 general physics Spin-½ |
| Zdroj: | New Journal of Physics |
| ISSN: | 1367-2630 |
| DOI: | 10.1088/1367-2630/aba30e |
| Popis: | We show that ultracold fermions in an artificial magnetic field open up a new window to the physics of the spinful fractional quantum Hall 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 fractional quantum Hall physics. 15 pages, 5 figures |
| Databáze: | OpenAIRE |
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