current

References in this section is ref.[1,6,7], which are rarely cited. I wonder why. Transmission is evaluated as

$$T(\omega ) = {\rm Tr} \left[ \Gamma_L(\omega ) G^R(\omega ) \Gamma_R(\omega ) G^A(\omega ) \right]$$ (105)

current is

$$I = \frac{e}{h} \int d\omega T(\omega ) (f(\omega -\mu_L)-f(\omega -\mu_R))$$ (106)