Figure 5

(a) Spin relaxation rate 1/T₁ as a function of magnetic field B and moving speed of the quantum dot v₀. (b) Partial derivative of 1/T₁ with respect to v₀. The white and the yellow regions indicate the partial derivative is below and above zero respectively. The parameters are chosen as ω_d = 1.1 meV, d = 20 nm, ϕ_v = 0.