Energy cooperation in quantum thermoelectric systems with multiple electric currents

Liu Yefeng¹, Lu Jincheng^{1, †}, Wang Rongqian¹, Wang Chen², Jiang Jian-Hua^{1, ‡}

Polar plots of (a) the effective cooling heat current I_Q and (b) efficiency η_max as a function of θ. The red dots represent the L-R thermoelectric effect, and blue dots represent the P-R thermoelectric effect. The parameters are t = 0.2k_BT, Γ = 0.5k_BT, μ = 0, E₁ = 0.2k_BT, E₂ = 2.0k_BT, E₃ = − 2.0k_BT, and F_e = F_Q = 1.