https://doi.org/10.1140/epjp/s13360-024-05089-z
Regular Article
Electronic and optical properties of tetrapod quantum dots under applied electric and magnetic fields
1
Departamento de Electrónica y Tecnología de Computadores, Facultad de Ciencias, Universidad de Granada, Granada, Spain
2
Grupo de Materia Condensada-UdeA, Instituto de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
3
Universidad EIA, C.P 055428, Envigado, Colombia
4
Mediterranean Institute of Fundamental Physics-MIFP, Via Appia Nuova, 31, Marino, 00047, Rome, Italy
5
Department of Solid State Physics, Yerevan State University, 1, Al. Manoogian, 0025, Yerevan, Armenia
6
SIGER Laboratory, Faculty of Sciences and Technology, Sidi Mohamed Ben Abdellah University, 2202, Fez, Morocco
7
Institución Universitaria-ITM, Calle 73, 76A-354, vía al Volador, 050034, Medellín, Colombia
8
GICEI, Facultad de Ingeniería, Institución Universitaria Pascual Bravo, 050034, Medellin, Colombia
Received:
18
December
2023
Accepted:
11
March
2024
Published online:
4
April
2024
In this work, the ground and low-lying excited states in GaAs tetrapod-shaped nanocrystals and in CdTe/CdS core/shell tetrapod-shaped nanocrystals are computed in the case of a finite confinement potential model using the finite element method and the effective mass approximation. For the single material tetrapod, electron energy levels are studied as a function of size parameters and the intensity of externally applied electric and magnetic fields, while for the core/shell tetrapod the electron and hole states are analyzed relative to size parameters of the core and shell thickness. The results show that the energies are strongly influenced by the tip-arm geometry, arm diameter, shell thickness and the intensity of the electric and magnetic fields.
© The Author(s) 2024
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