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Tunable coulomb blockade and giant coulomb blockade magnetoresistance in a double quantum dot system
Article first published online: 11 JUL 2011
DOI: 10.1002/qua.23196
Copyright © 2011 Wiley Periodicals, Inc.
Issue
International Journal of Quantum Chemistry
Special Issue: Proceedings of the International Symposium on Theory and Computations in Molecular and Materials Sciences, Biology, and Pharmacology
Volume 112, Issue 1, pages 28–32, January 2012
Additional Information
How to Cite
Zhang, X.-G. and Xiang, T. (2012), Tunable coulomb blockade and giant coulomb blockade magnetoresistance in a double quantum dot system. Int. J. Quantum Chem., 112: 28–32. doi: 10.1002/qua.23196
Publication History
- Issue published online: 3 NOV 2011
- Article first published online: 11 JUL 2011
- Manuscript Accepted: 24 MAY 2011
- Manuscript Received: 27 FEB 2011
Funded by
- NSFC, National Program for Basic Research of the Ministry of Science and Technology of China
- Abstract
- Article
- References
- Cited By
Keywords:
- coulomb blockade;
- magnetoresistance;
- quantum dot;
- tunneling
Abstract
We propose a Hubbard model to describe the tunneling effect of electrons in a double quantum dot system connected in the parallel circuit configuration to electrodes. The change in the interdot coupling is shown to dramatically influence the Coulomb blockade (CB) properties. For magnetic double dots, the interdot coupling can be tuned by the external magnetic field, leading to a giant CB magnetoresistance. Possible detection of this effect in organic magnetic molecular systems is discussed. © 2011 Wiley Periodicals, Inc. Int J Quantum Chem, 2012