Spin excitation spectra of spin–orbit coupled bosons in an optical lattice
Li Ruo-Yana) , He Liangb) , Sun Qingc)† 
, Ji An-Chunc)‡ , Tian Guang-Shana)
, Ji An-Chun, Tian Guang-Shan
Spin excitation spectra of spin–orbit coupled bosons in an optical lattice |
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Li Ruo-Yan
, Ji An-Chun, Tian Guang-Shan |
| (a) Spin configuration of the 2×2 spin vortex phase, where i denotes the magnetic primitive cell and μ is the sublattice index. (b) The spin is rotated from the z axis to a new direction ( θ , ϕ ) in the spin-wave theory. |
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