Oscillation of the spin-currents of cold atoms on a ring due to light-induced spin–orbit coupling<xref ref-type="fn" rid="cpb142694fn1">*</xref>

Oscillation of the spin-currents of cold atoms on a ring due to light-induced spin–orbit coupling*

Xie Wen-Fang^a), He Yan-Zhang^b), Bao Cheng-Guang^b)†

The amplitude A _amp versus δ and γ for the case that the initial state is a superposition state. q = 3 and β = 2 are assumed. ϕ = π [0] are given in panel (a) [(b)]. The dotted line marks the maximum of A _amp = 2. The locations with γ = 0 have A _amp = 0.