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Probing ferromagnetic order in few-fermion correlated spin-flip dynamics
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| Zeitschriftentitel: | New Journal of Physics |
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| Personen und Körperschaften: | , , |
| In: | New Journal of Physics, 21, 2019, 5, S. 053005 |
| Format: | E-Article |
| Sprache: | Unbestimmt |
| veröffentlicht: |
IOP Publishing
|
| Schlagwörter: |
| Zusammenfassung: | <jats:title>Abstract</jats:title> <jats:p>We unravel the dynamical stability of a fully polarized one-dimensional ultracold few-fermion spin-1/2 gas subjected to inhomogeneous driving of the itinerant spins. Despite the unstable character of the total spin-polarization the existence of an interaction regime is demonstrated where the spin-correlations lead to almost maximally aligned spins throughout the dynamics. The resulting ferromagnetic order emerges from the build up of superpositions of states of maximal total spin. They comprise a decaying spin-polarization and a dynamical evolution towards an almost completely unpolarized NOON-like state. Via single-shot simulations we demonstrate that our theoretical predictions can be detected in state-of-the-art ultracold experiments.</jats:p> |
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| Umfang: | 053005 |
| ISSN: |
1367-2630
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| DOI: | 10.1088/1367-2630/ab14ba |