Quantum phase transition and Coulomb blockade effect in triangular quantum dots with interdot capacitive and tunnel couplings*
Xiong Yong-Chena)†, Wang Wei-Zhongb),c), Yang Jun-Taoa), Huang Hai-Minga)
       
(a) Transmission coefficient T ( ω ) at zero temperature for U = 0.1, t = 0.0 (solid line), U = 0.1, t = 0.0065 (dashed line), and U = 0.0, t = 0.0 (dotted line); (b) T ( ω ) for U = 0.1 and various t . The other parameters are given by Γ = 0.01, V = 0.15, and ε = − U /2–2 V .