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Fano-like resonances in three-quantum-dot Aharonov–Bohm rings

In this work we study electron transport through quantum wires coupled to a quantum dot Aharonov–Bohm ring by using a noninteracting Anderson tunnelling Hamiltonian. In the case of an asymmetric coupling and three dots within the Aharonov–Bohm ring we have observed the appearance of Fano-like resonances in the conductance. We have investigated the asymmetry and the position of the conductance resonances and found closed expressions. We have also observed Aharonov–Bohm oscillations. Finally the local density of states as well as the probability amplitude phases have been studied.