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Binding energies of excitonic complexes in type-II quantum rings from diffusion quantum Monte Carlo calculations

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Binding energies of excitonic complexes in type-II quantum rings from diffusion quantum Monte Carlo calculations. / Thomas, David; Hunt, Ryan James; Drummond, Neil David; Hayne, Manus.

In: Physical Review B: Condensed Matter and Materials Physics, Vol. 99, No. 11, 115306, 15.03.2019.

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@article{c8ac20ec1eaa4afcb994ad3898f65d9c,
title = "Binding energies of excitonic complexes in type-II quantum rings from diffusion quantum Monte Carlo calculations",
abstract = "Excitonic complexes in type-II quantum-ring heterostructures may be considered as artificial atoms due to the confinement of only one charge-carrier type in an artificial nucleus. Binding energies of excitons, trions, and biexcitons in these nanostructures are then effectively ionization energies of these artificial atoms. The binding energies reported here are calculated within the effective-mass approximation using the diffusion quantum Monte Carlo method and realistic geometries for gallium antimonide rings in gallium arsenide. The electrons form a halo outside the ring, with very little charge density inside the central cavity of the ring. The de-excitonization and binding energies of the complexes are relatively independent of the precise shape of the ring.",
author = "David Thomas and Hunt, {Ryan James} and Drummond, {Neil David} and Manus Hayne",
year = "2019",
month = "3",
day = "15",
doi = "10.1103/PhysRevB.99.115306",
language = "English",
volume = "99",
journal = "Physical Review B: Condensed Matter and Materials Physics",
issn = "1098-0121",
publisher = "AMER PHYSICAL SOC",
number = "11",

}

RIS

TY - JOUR

T1 - Binding energies of excitonic complexes in type-II quantum rings from diffusion quantum Monte Carlo calculations

AU - Thomas, David

AU - Hunt, Ryan James

AU - Drummond, Neil David

AU - Hayne, Manus

PY - 2019/3/15

Y1 - 2019/3/15

N2 - Excitonic complexes in type-II quantum-ring heterostructures may be considered as artificial atoms due to the confinement of only one charge-carrier type in an artificial nucleus. Binding energies of excitons, trions, and biexcitons in these nanostructures are then effectively ionization energies of these artificial atoms. The binding energies reported here are calculated within the effective-mass approximation using the diffusion quantum Monte Carlo method and realistic geometries for gallium antimonide rings in gallium arsenide. The electrons form a halo outside the ring, with very little charge density inside the central cavity of the ring. The de-excitonization and binding energies of the complexes are relatively independent of the precise shape of the ring.

AB - Excitonic complexes in type-II quantum-ring heterostructures may be considered as artificial atoms due to the confinement of only one charge-carrier type in an artificial nucleus. Binding energies of excitons, trions, and biexcitons in these nanostructures are then effectively ionization energies of these artificial atoms. The binding energies reported here are calculated within the effective-mass approximation using the diffusion quantum Monte Carlo method and realistic geometries for gallium antimonide rings in gallium arsenide. The electrons form a halo outside the ring, with very little charge density inside the central cavity of the ring. The de-excitonization and binding energies of the complexes are relatively independent of the precise shape of the ring.

U2 - 10.1103/PhysRevB.99.115306

DO - 10.1103/PhysRevB.99.115306

M3 - Journal article

VL - 99

JO - Physical Review B: Condensed Matter and Materials Physics

JF - Physical Review B: Condensed Matter and Materials Physics

SN - 1098-0121

IS - 11

M1 - 115306

ER -