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2006

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/10567

Electronic structure of few-electron concentric double quantum rings

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http://dx.doi.org/10.1103/PhysRevB.73.235327

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.

Subject

Semiconductors, Electrònica quàntica

Subject (English)

Semiconductors, Quantum electronics

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

CLIMENTE, J. I., et al. Electronic structure of few-electron concentric double quantum rings. Physical Review B. 2006. Vol. 73, num. 23, pags. 235327-1-235327-6. ISSN 0163-1829. [consulted: 12 of August of 2026]. Available at: https://hdl.handle.net/2445/10567

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