Effect of inhomogeneous magnetic flux on double-dot Aharonov-Bohm interferometer

Zhi Ming Bai*, Min Fong Yang, Yung Chung Chen

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

52 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)2053-2063
Number of pages11
JournalJournal of Physics Condensed Matter
Volume16
Issue number12
DOIs
StatePublished - 31 03 2004
Externally publishedYes

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