Fano resonances and Aharonov-Bohm effects in transport through a square quantum dot molecule

Aharonov-Bohm effects in transport through a square quantum dot molecule

We study the Aharonov-Bohm (AB) effect in a coupled 2×2 quantum dot array with two-terminals. A striking conductance dip arising from the Fano interference is found as the energy levels of the intermediate dots are mismatched. It is lifted in the presence of a magnetic flux. Meanwhile, a novel five peak structure is observed in the conductance for large mismatch. The AB evolution of the linear ...

Interactions of Fano resonances in the transmission of an Aharonov-Bohm ring with two embedded quantum dots in the presence of a magnetic field

Interactions of Fano resonances in the transmission of an Aharonov-Bohm ring with two embedded quantum dots in the presence of a magnetic field" (2005).

Interactions of Fano resonances in the transmission of an Aharanov-Bohm ring with two embedded quantum dots in the presence of a magnetic field

Mesoscopic Fano effect in a quantum dot embedded in an Aharonov-Bohm ring

The Fano effect, which occurs through the quantum-mechanical cooperation between resonance and interference, can be observed in electron transport through a hybrid system of a quantum dot and an AharonovBohm ring. While a clear correlation appears between the height of the Coulomb peak and the real asymmetric parameter q for the corresponding Fano line shape, we need to introduce a complex q to...

Theory of Fano effects in an Aharonov-Bohm ring with a quantum dot

Using a realistic model of a quantum dot embedded in an Aharonov-Bohm ring with several current-carrying channels, we demonstrate phase persistence in the Fano and Aharonov-Bohm effects as has been observed in experiments. The phase persistence arises because most of states contributing to the Coulomb oscillation of the conductance are weakly coupled to ring states through a small number of sta...