Enhanced spin-dependent thermopower in a double-quantum-dot sandwiched between two-dimensional electron gases

Chi Feng¹, Fu Zhen-Guo^{2, †}, Liu Liming¹, Zhang Ping^{2, ‡}

Spin-dependent conductance G σ in (a) and (c), and thermopower S σ in (b) and (d) as functions of the chemical potential μ for different values of the dots’ level detuning Δ . The other parameters are dots’ separation ak F = 0.1 Γ , dotʼs level ε d = 0 , temperature T = 0.02 Γ , Zeeman splitting E z = 0.5 Γ , Zeeman energy ω z / E F = 0 , and magnetic flux ϕ = 0 .