Trapping of an electron in the transmission through two quantum dots coupled by a wire
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
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.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-50368DOI: 10.1134/1.2150869OAI: oai:DiVA.org:liu-50368DiVA: diva2:271264