Coulomb-modified Fano interference in a double quantum dot Aharonov-Bohm ring
نویسندگان
چکیده
منابع مشابه
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...
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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...
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We present an analysis of the Aharonov-Bohm oscillations for a mesoscopic ring with a quantum dot inserted in one of its arms. It is shown that mi-croreversibility demands that the phase of the Aharonov-Bohm oscillations changes abruptly when a resonant level crosses the Fermi energy. We use the Friedel sum rule to discuss the conservation of the parity of the oscillations at different conducta...
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ژورنال
عنوان ژورنال: physica status solidi (b)
سال: 2010
ISSN: 0370-1972
DOI: 10.1002/pssb.201046022