A dynamical transition of a chain of charged particles in a 2D substrate potential

Xiao-Ping Yuan,Li-Yan Qiao,Xia Huang

Figure 5. (a) Dependence of the average velocity of the system on the coupling strength K and the amplitude of the ac force b at ω = 0.02π. (b) The variation of the current with the coupling strength for different amplitudes of the ac force for b = 0.5, 1, 1.3, 3.5. The other parameters are Fd = 0.8, $\theta =(1+\sqrt{5})/2$ and ${\omega }_{0y}=0.5$.