Figure 3

The magnetic field derived from the theoretical model with Poisson distribution. The x-axis represents the time sequence and the y-axis the magnetic field. Parameters: m_a = 0.6, θ_a = 5, = 15, h_a = 0; m_b = 0.2, θ_b = 4, = 192, h_b = 0.01; m_c = 0.1, θ_c = 3, = 34, h_c = 0.01; m_d = 0.1, θ_d = 3, = 32, h_d = 0; K^± = 1.