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Title: Electronic structure of few-electron concentric double quantum rings
Author: Climente, J. I.
Planelles, Josep (Planelles Fuster)
Barranco Gómez, Manuel
Malet i Giralt, Francesc
Pi Pericay, Martí
Keywords: Semiconductors
Electrònica quàntica
Quantum electronics
Issue Date: 2006
Publisher: The American Physical Society
Abstract: The ground state structure of few-electron concentric double quantum rings is investigated within the local spin density approximation. Signatures of inter-ring coupling in the addition energy spectrum are identified and discussed. We show that the electronic configurations in these structures can be greatly modulated by the inter-ring distance: At short and long distances the low-lying electron states localize in the inner and outer rings, respectively, and the energy structure is essentially that of an isolated single quantum ring. However, at intermediate distances the electron states localized in the inner and the outer ring become quasidegenerate and a rather entangled, strongly-correlated system is formed.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review B, 2006, vol. 73, núm. 23, p. 235327-1-235327-6
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ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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