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 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.
Date issued
2021-04Department
Massachusetts Institute of Technology. Research Laboratory of Electronics; MIT-Harvard Center for Ultracold Atoms; Massachusetts Institute of Technology. Department of PhysicsJournal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Chung, Woo Chang, de Hond, Julius, Xiang, Jinggang, Cruz-Colón, Enid and Ketterle, Wolfgang. 2021. "Tunable Single-Ion Anisotropy in Spin-1 Models Realized with Ultracold Atoms." Physical Review Letters, 126 (16).
Version: Final published version
ISSN
0031-9007
1079-7114