Artificial Hydrogen molecule in vertically stacked Ga<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e955" altimg="si20.svg"><mml:msub><mml:mrow/><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:math>Al<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e967" altimg="si21.svg"><mml:msub><mml:mrow/><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:math>As nanoscale rings: Structural and external prob

Castrillón, Jhonny; Gomez-Ramirez, Danny A. J.; Rivera, I. E.; Suaza, Y.A.; Marín, J.H.; Fulla, M.R.

doi:10.1016/j.physe.2019.113765

Cited by 7 publications

(1 citation statement)

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“…Vertically stacked quantum rings have been considered, for example, in the works of Refs. 42 – 44 . QR-based systems may find prospective applications in the fields of optoelectronics (in the form of light emitters and lasers) and photonics as well as in spintronics and quantum information technologies 20 .…”

Section: Introductionmentioning

confidence: 99%

Electronic structure of vertically coupled quantum dot-ring heterostructures under applied electromagnetic probes. A finite-element approach

Vinasco

Laroze

Radu

et al. 2021

Sci Rep

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We theoretically investigate the electron and hole states in a semiconductor quantum dot-quantum ring coupled structure, inspired by the recent experimental report by Elborg and collaborators (2017). The finite element method constitutes the numerical technique used to solve the three-dimensional effective mass equation within the parabolic band approximation, including the effects of externally applied electric and magnetic fields. Initially, the features of conduction electron states in the proposed system appear discussed in detail, under different geometrical configurations and values of the intensity of the aforementioned electromagnetic probes. In the second part, the properties of an electron-hole pair confined within the very kind of structure reported in the reference above are investigated via a model that tries to reproduce as close as possible the developed profile. In accordance, we report on the energies of confined electron and hole, affected by the influence of an external electric field, revealing the possibility of field-induced separate spatial localization, which may result in an indirect exciton configuration. In relation with this fact, we present a preliminary analysis of such phenomenon via the calculation of the Coulomb integral.

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Section: Introductionmentioning

confidence: 99%