Electronic properties of quantum dots formed by magnetic double barriers in quantum wires
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
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.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-70345DOI: 10.1103/PhysRevB.84.035319ISI: 000293181100004OAI: oai:DiVA.org:liu-70345DiVA: diva2:438328
Funding Agencies|Heinrich-Heine-Universitat Dusseldorf||2011-09-022011-09-022011-09-20