Hopf-link GaAs-AlGaAs quantum ring under geometric and external field settings

Ospina, D.A.; Duque, D.; Mora-Ramos, M.E.; Vinasco, J.A.; Radu, A.; Restrepo, R.L.; Morales, A.L.; Sierra-Ortega, J.; Escorcia-Salas, Gene Elizabeth; Giraldo, M.A.; Montoya-Sanchez, J.; Duque, C.A.

doi:10.1016/j.physe.2024.116032

Physica E: Low-dimensional Systems and Nanostructures

2024

DOI: 10.1016/j.physe.2024.116032

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Hopf-link GaAs-AlGaAs quantum ring under geometric and external field settings

D.A. Ospina,

D. Duque,

M.E. Mora-Ramos

et al.

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Geometry-Tuned Optical Absorption Spectra of the Coupled Quantum Dot–Double Quantum Ring Structure

Bejan,

Stan

2024

Nanomaterials

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We investigate the energy spectra and optical absorption of a 3D quantum dot–double quantum ring structure of GaAs/Al0.3Ga0.7As with adjustable geometrical parameters. In the effective mass approximation, we perform 3D numerical computations using as height profile a superposition of three Gaussian functions. Independent variations of height and width of the dot and of the rings and also of the dot–rings distance determine particular responses, useful in practical applications. We consider that a suitable manipulation of the geometrical parameters of this type of quantum coupling offer a variety of responses and, more important, the possibility of a fine adjusting in energy spectra and in the opportunity of choosing definite absorption domains, properties required for the improvement of the performances of optoelectronic devices.

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Geometry-Tuned Optical Absorption Spectra of the Coupled Quantum Dot–Double Quantum Ring Structure

Bejan,

Stan

2024

Nanomaterials

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show abstract

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Hopf-link GaAs-AlGaAs quantum ring under geometric and external field settings

Cited by 1 publication

References 45 publications

Geometry-Tuned Optical Absorption Spectra of the Coupled Quantum Dot–Double Quantum Ring Structure

Geometry-Tuned Optical Absorption Spectra of the Coupled Quantum Dot–Double Quantum Ring Structure

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