Optical emission from single, charge-tunable quantum rings

Warburton, Richard J.; Schäflein, C.; Haft, D.; Bickel, F.; Lorke, Axel; Karraï, K.; Garcı́a, J.M.; Schoenfeld, Winston V.; Petroff, P. M.

doi:10.1016/s1386-9477(00)00186-7

Cited by 28 publications

(8 citation statements)

References 23 publications

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“…(iii) Three transitions are observed in the X 3− spectrum in Fig. 2, in contradiction with previous models which start from degenerate electron P-states and predict two peaks [20][21][22][23][24][25]. In Ref.…”

Section: Charged Excitons In Ingaas/gaas Quantum Dotscontrasting

confidence: 66%

Theory of excitons, charged excitons, exciton fine-structure and entangled excitons in self-assembled semiconductor quantum dots

Zunger

Bester

2004

Physica E: Low-dimensional Systems and Nanostructures

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Section: Charged Excitons In Ingaas/gaas Quantum Dotscontrasting

confidence: 66%

Theory of excitons, charged excitons, exciton fine-structure and entangled excitons in self-assembled semiconductor quantum dots

Zunger

Bester

2004

Physica E: Low-dimensional Systems and Nanostructures

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“…The effects of an external electric field on the AB oscillations in the energy spectrum of quantum rings have been also reported 14 . Most of the experimental work has been performed on charged excitons in nanorings 8,9,15,16 and in neutral excitons in type-II quantum dots 17 . The possibility of the observation of the so-called "optical" AB has been an interesting and controversial subject in the recent years 18,19,20,21 .…”

Section: Introductionmentioning

confidence: 99%

Coulomb-interaction effects on the electronic structure of radially polarized excitons in nanorings

et al. 2006

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The electronic structure of radially polarized excitons in structured nanorings is analyzed, with emphasis in the ground-state properties and their dependence under applied magnetic fields perpendicular to the ring plane. The electron-hole Coulomb attraction has been treated rigorously, through numerical diagonalization of the full exciton Hamiltonian in the non-interacting electronhole pairs basis. Depending on the relative weight of the kinetic energy and Coulomb contributions, the ground-state of polarized excitons has "extended" or "localized" features. In the first case, corresponding to small rings dominated by the kinetic energy, the ground-state shows Aharonov-Bohm (AB) oscillations due to the individual orbits of the building particles of the exciton. In the localized regime, corresponding to large rings dominated by the Coulomb interaction, the only remaining AB oscillations are due to the magnetic flux trapped between the electron and hole orbits. This dependence of the exciton, a neutral excitation, on the flux difference confirms this feature as a signature of Coulomb dominated polarized excitons. Analytical approximations are provided in both regimens, which accurate reproduce the numerical results.

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“…With quantum dots as a model system, the evolution of their properties with size has been studied. 6 Many electronic, photonic, and magnetic devices can be organized by using quantum dots, 7 such as solar cells, 8 singleelectron transistors, 9 and lasers. 10 1D nanomaterials are of great interest in materials chemistry because they exhibit novel optical properties arising from dimensional anisotropy, and most importantly, they can be utilized as key materials in addressable two-terminal circuits for nanodevice applications.…”

Section: Introductionmentioning

confidence: 99%

Self-Assembly of Three-Dimensional Nanostructured Antimony

et al. 2008

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The 3D nanostructured antimony is synthesized by simply immerging an anodically oxidized copper sheet into SbCl 3 -(n-Bu) 4 NBF 4 -DMSO solution at room temperature. The morphology, shape, and structure were characterized by FE-SEM, XRD, and HRTEM. The 3D nanostructured antimony has a regular fourteen-faced polyhedron shape and is constructed by Sb nanowires. The Sb nanowires are single crystals with a rhombohedral crystal structure, the average diameter of the Sb nanowires ranges from 5 to 8 nm. The HRTEM investigation and theoretical calculations indicate that Sb nanowires grow along the arrises of its rhombohedral lattice. The growth mechanism is proposed, the electron transport along Sb nanowires may be anisotropic and results in the preferred orientation of the Sb nanowires growth. The nanocages can be formed by quaric self-assembly of Sb nanowires because of the anisotropy of its rhombohedral crystal structure.

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Optical emission from single, charge-tunable quantum rings

Cited by 28 publications

References 23 publications

Theory of excitons, charged excitons, exciton fine-structure and entangled excitons in self-assembled semiconductor quantum dots

Theory of excitons, charged excitons, exciton fine-structure and entangled excitons in self-assembled semiconductor quantum dots

Coulomb-interaction effects on the electronic structure of radially polarized excitons in nanorings

Self-Assembly of Three-Dimensional Nanostructured Antimony

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