The effect of position-dependent effective mass on the optical properties of a spherical quantum dot confined in inverse square root truncated and deformed exponential potential

In this work, we present a study of the bound-state energy levels and optical transitions of a quantum dot confined in an inverse square root truncated and deformed exponential potential. Our study aims to analyze the influence of position-dependent effective mass, chosen as modified exponential mas...

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Bibliographic Details
Published in:European physical journal plus 2023-06, Vol.138 (6), p.577, Article 577
Main Authors: Bayrak, K., Kaya, D., Bayrak, O.
Format: Article
Language:English
Subjects:
Absorption
Absorptivity
Applied and Technical Physics
Atomic
Complex Systems
Condensed Matter Physics
Deformation
Eigenvalues
Electrons
Energy
Energy levels
Investigations
Mathematical and Computational Physics
Molecular
Optical and Plasma Physics
Optical properties
Optical transition
Physics
Physics and Astronomy
Quantum dots
Refractivity
Regular Article
Runge-Kutta method
Schrodinger equation
Semiconductors
Theoretical
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Summary:In this work, we present a study of the bound-state energy levels and optical transitions of a quantum dot confined in an inverse square root truncated and deformed exponential potential. Our study aims to analyze the influence of position-dependent effective mass, chosen as modified exponential mass and Woods–Saxon mass, and the shapes of the confined potential on the energy eigenvalues, absorption coefficients, and refractive index change of an electron in a typical GaAs semiconductor, specifically for a two-level optical transition. To achieve this, we solve the Schrödinger equation numerically using the Runge–Kutta method. Our findings indicate that the spatial variation in the position-dependent masses and confinement potential plays a significant role in determining the absorption coefficients and total refractive index changes.
ISSN:2190-5444
2190-5444
DOI:10.1140/epjp/s13360-023-04197-6