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Trapping of an electron in the transmission through two quantum dots coupled by a wire
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology.
Institute of Physics, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation.
Max-Planck-Institut für Physik Komplexer Systeme, D-01187 Dresden, Germany.
2005 (English)In: JETP Letters: Journal of Experimental And Theoretical Physics Letters, ISSN 0021-3640, Vol. 82, no 8, 498-503 p.Article in journal (Refereed) Published
Abstract [en]

We consider single-channel transmission through a double quantum dot that consists of two identical single dots coupled by a wire. The numerical solution for the scattering wave function shows that the resonance width of a few of the states may vanish when the width (or length) of the wire and the energy of the incident particle each take a certain value. In such a case, a particle is trapped inside the wire as the numerical visualization of the scattering wave function shows. To understand these numerical results, we explore a simple model with a small number of states, which allows us to consider the problem analytically. If the eigenenergies of the closed system cross the energies of the transmission zeroes, the wire effectively decouples from the rest of the system and traps the particle. © 2005 Pleiades Publishing, Inc.

Place, publisher, year, edition, pages
2005. Vol. 82, no 8, 498-503 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-50368DOI: 10.1134/1.2150869OAI: diva2:271264
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-12

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Sadreev, Almas
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The Institute of TechnologyDepartment of Physics, Chemistry and Biology
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