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| Format: | Preprint |
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2025
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| Online-Zugang: | https://arxiv.org/abs/2501.11402 |
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| _version_ | 1866909462593273856 |
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| author | Lauprêtre, Thomas Rey, Ana Maria Vernac, Laurent Laburthe-Tolra, Bruno |
| author_facet | Lauprêtre, Thomas Rey, Ana Maria Vernac, Laurent Laburthe-Tolra, Bruno |
| contents | We report on the study of itinerant magnetism of lattice-trapped magnetic atoms, driven by magnetic dipole-dipole interactions, in the low-entropy and close-to-unit filling regime. We have used advanced dynamical decoupling techniques to efficiently suppress the sensitivity to magnetic field fluctuations. We have thus measured the spin coherence of an itinerant spin 3 Bose dipolar gas throughout a quantum phase transition from a superfluid phase to a Mott insulating phase. In the superfluid phase, a metastable ferromagnetic behavior is observed below a dynamical instability which occurs at lattice depths below the phase transition. In the insulating phase, the thermalization towards a paramagnetic state is driven by an interplay between intersite and superexchange interactions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_11402 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing Coherences and Itinerant Magnetism in a Dipolar Lattice Gas Lauprêtre, Thomas Rey, Ana Maria Vernac, Laurent Laburthe-Tolra, Bruno Quantum Gases We report on the study of itinerant magnetism of lattice-trapped magnetic atoms, driven by magnetic dipole-dipole interactions, in the low-entropy and close-to-unit filling regime. We have used advanced dynamical decoupling techniques to efficiently suppress the sensitivity to magnetic field fluctuations. We have thus measured the spin coherence of an itinerant spin 3 Bose dipolar gas throughout a quantum phase transition from a superfluid phase to a Mott insulating phase. In the superfluid phase, a metastable ferromagnetic behavior is observed below a dynamical instability which occurs at lattice depths below the phase transition. In the insulating phase, the thermalization towards a paramagnetic state is driven by an interplay between intersite and superexchange interactions. |
| title | Probing Coherences and Itinerant Magnetism in a Dipolar Lattice Gas |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2501.11402 |