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Spin mixing and protection of ferromagnetism in a spinor dipolar condensate

TitleSpin mixing and protection of ferromagnetism in a spinor dipolar condensate
Publication TypeJournal Article
Year of Publication2018
AuthorsLepoutre, S, Kechadi, K, Naylor, B, Zhu, B, Gabardos, L, Isaev, L, Pedri, P, Rey, AM, Vernac, L, Laburthe-Tolra, B
JournalPhysical Review A
Date Published2018-01

We study spin mixing dynamics in a chromium dipolar Bose-Einstein condensate, after tilting the atomic spins by an angle θ with respect to the magnetic field. Spin mixing is triggered by dipolar coupling, but, once dynamics has started, it is mostly driven by contact interactions. For the particular case θ=π/2, an external spin-orbit coupling term induced by a magnetic gradient is required to enable the dynamics. Then the initial ferromagnetic character of the gas is locally preserved, an unexpected feature that we attribute to large spin-dependent contact interactions.

Short TitlePhys. Rev. A

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