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Quantum Transport by Yaroslav M. Blanter, Yuli V. Nazarov

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6.5 Weak interaction

Having given so much attention to tunneling in the previous three sections, we would like to depart from it now and discuss interaction effects in nanostructures with more transmissive channels. As opposed to tunneling, we cannot now analyze strong and weak interactions on an equal footing: we stick to the simpler case of weak interaction. This, however, is a quite natural case in transmissive nanostructures. As we have seen in many examples in Section 6.4, the interaction strength is characterized by an effective impedance, where corresponds to a weak interaction. Multi-channel transmissive nanostructures exhibit large conductance; ...

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