2016/07/25 by Bo Xiong, Jun-Hui Zheng, Jun-hui Zheng +4 · 1 citation
Chemistry · Physics and Astronomy · #Antiferromagnetism #Bilayer #Chemistry #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Ferromagnetism #Magnetic field #Physics #Physics of Superconductivity and Magnetism #Quantum many-body systems #Quantum mechanics #Quantum tunnelling #Spin (aerodynamics) #cond-mat.quant-gas #quant-ph
paper · pdf · doi:10.1103/physreva.94.063611
published as Phys. Rev. A 94, 063611 (2016) · 7 pages of RevTex4-1, 4 figures
arxiv created 2016/07/25 · openalex publication_date 2016/12/14 · arxiv updated 2016/12/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate the magnetic phases of a bilayer system of ultracold bosons in the presence of Raman-induced spin-orbit (SO) coupling and laser-assisted interlayer tunneling. We consider this bilayer system in the Mott-insulating regime where on-site two-body interactions exceed all the tunneling terms. In such a system there exists a rich set of spin textures including hetero-ferromagnetic, heterochiral magnetic, and chiral magnetic phases with interlayer antiferromagnetic. In particular, the heterochiral magnetic phase induced by SO coupling occurs extremely rarely in solid-state materials. We theoretically analyze the contribution of interlayer ferromagnetic interaction to the formation of these magnetic phases, including interactions that arise from laser-assisted tunneling, stagger ``magnetic field,'' and antisymmetric exchange, i.e., Dzyaloshinskii-Moriya interactions. Finally, we detail an experimental setup that produces the desired interactions in a system of cold alkali-metal atoms.