|Title||Spin mixing and protection of ferromagnetism in a spinor dipolar condensate|
|Publication Type||Journal Article|
|Year of Publication||2018|
|Authors||Lepoutre, S, Kechadi, K, Naylor, B, Zhu, B, Gabardos, L, Isaev, L, Pedri, P, Rey, AM, Vernac, L, Laburthe-Tolra, B|
|Journal||Physical Review A|
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 Title||Phys. Rev. A|