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Basic Modeling of Openness, Quantum States and Transport in Two- and Three-Dimensional Ballistic Cavities
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics . Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics . Linköping University, The Institute of Technology.
2010 (English)In: Journal of Siberian Federal University. Mathematics & Physics, Vol. 3, 280-288 p.Article in journal (Refereed) Published
Abstract [en]

A basic model for particle states and current flow in open quantum dots/billiards are investigated. The model is unconventional and extends the use of complex potentials first introduced in phenomenological nuclear inelastic scattering theory (the optical model). Attached leads/source drain are represented by complex potentials. Probability densities and currents flows for open 2D quantum dots/billiards are calculated and the results are compared with microwave measurements used to emulate the dot. We also apply the model to a recangular enclosure and report on helical flows guided by nodal lines and disc-like accumulations of flow lines. The model is of conceptual as well as practical and educational interest.

Place, publisher, year, edition, pages
2010. Vol. 3, 280-288 p.
Keyword [en]
nano-scale systems, quantum dots, microwave billiards, quantum transport, vortices, helical motion, streamlines
Identifiers
URN: urn:nbn:se:liu:diva-62374OAI: oai:DiVA.org:liu-62374DiVA: diva2:373111
Available from: 2010-06-20 Created: 2010-11-30 Last updated: 2011-01-12

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Berggren, Karl-FredrikIrina I., Yakimenko

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