Tunable Single-Ion Anisotropy in Spin-1 Models Realized with Ultracold Atoms

Tunable Single-Ion Anisotropy in Spin-1 Models Realized with Ultracold Atoms

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Mott insulator plateaus in optical lattices are a versatile platform to study spin physics. Using sites occupied by two bosons with an internal degree of freedom, we realize a uniaxial single-ion anisotropy term proportional to (S^{z})^{2} that plays an important role in stabilizing magnetism for lo...

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Bibliographic Details
Main Authors: Chung, Woo Chang (Author), de Hond, Julius (Author), Xiang, Jinggang (Author), Cruz-Colón, Enid (Author), Ketterle, Wolfgang (Author)
Format: Article
Language:English
Published: American Physical Society (APS), 2022-04-20T18:33:31Z.
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Summary:Mott insulator plateaus in optical lattices are a versatile platform to study spin physics. Using sites occupied by two bosons with an internal degree of freedom, we realize a uniaxial single-ion anisotropy term proportional to (S^{z})^{2} that plays an important role in stabilizing magnetism for low-dimensional magnetic materials. Here we explore nonequilibrium spin dynamics and observe a resonant effect in the spin alignment as a function of lattice depth when exchange coupling and on-site anisotropy are similar. Our results are supported by many-body numerical simulations and are captured by the analytical solution of a two-site model.

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