Figure 3: Effects of the driving strength.
From: Spin-momentum coupled Bose-Einstein condensates with lattice band pseudospins

Band minimum qmin versus driving field strength V′ for different driving frequencies of (a) |Δω|=2.92 ER and (c) |Δω|=5.21 ER. The red points are experimental data averaged over 5 data points with s.d. errorbars, and the solid lines are the the theoretical predictions from a two-band model. sgn(Δω) determines the direction of motion of the moving lattice. (b,d) Corresponding hybrid band structures for different driving field strengths , 0.75 ER and 0 ER (red, blue and black curves, respectively).