Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 16, Issue 12, Pages 2053-2063Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/16/12/014
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The influence of the inhomogeneous distribution of the magnetic flux on quantum transport through coupled double quantum dots embedded in an Aharonov-Bohm interferometer are investigated. We show that the effective tunnelling coupling between two dots can be tuned by the magnetic flux imbalance threading two AB subrings. Thus the conductance and the local densities of states become periodic functions of the magnetic flux imbalance. Therefore, transport signals can be manipulated by adjusting the magnetic flux imbalance. Thus accurate control of the distribution of the magnetic flux is necessary for any practical application of such an Aharonov-Bohm interferometer.
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