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Electronic properties of quantum dots formed by magnetic double barriers in quantum wires
University of Dusseldorf.
University of Dusseldorf.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
2011 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 84, no 3, 035319- p.Article in journal (Refereed) Published
Abstract [en]

The transport through a quantum wire exposed to two magnetic spikes in series is modeled. We demonstrate that quantum dots can be formed this way which couple to the leads via magnetic barriers. Conceptually, all quantum dot states are accessible by transport experiments. The simulations show Breit-Wigner resonances in the closed regime, while Fano resonances appear as soon as one open transmission channel is present. The system allows one to tune the dots confinement potential from subparabolic to superparabolic by experimentally accessible parameters.

Place, publisher, year, edition, pages
American Physical Society , 2011. Vol. 84, no 3, 035319- p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-70345DOI: 10.1103/PhysRevB.84.035319ISI: 000293181100004OAI: diva2:438328
Funding Agencies|Heinrich-Heine-Universitat Dusseldorf||Available from: 2011-09-02 Created: 2011-09-02 Last updated: 2011-09-20

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Zozoulenko, Igor
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Department of Science and TechnologyThe Institute of Technology
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