Biexciton in Strongly Oblate Ellipsoidal Quantum Dot with Relativistic Corrections

Document Type : Articles

Authors

1 Department of Physics and Engineering Sciences, Buein Zahra Technical University, Buein Zahra, Iran

2 Department of Physics, University of Agriculture and Environmental Sciences Umuagwo, Imo State, Nigeria

Abstract

Abstract
Recent progress in high-technology equipment enables the fabrication of quantum dots such as GaAs, and GaAlAs confining a finite number of excitons and allowing for control of the properties of quantum dots. Biexciton quantum dots are the simplest example that can be used to upgrade optoelectronics technologies. This theoretical research investigates a model of the biexciton state in the strongly oblate ellipsoidal quantum dot with the relativistic corrections of mass and Hamiltonian in the framework of the quantum field theory due to the importance of the relativistic effect for this type of quantum dot shapes. The Sturmian function transformation and Wick ordering method to calculate the vacuum state energy eigenvalue of the biexciton system are utilized. Based on the relativistic behavior of interactions, the mass corrections to the Hamiltonian are defined. Dependence of the relativistic mass on the distances between electrons and the constituent mass to the coupling constant is obtained. The results show that as increasing quantum dot size, the relativistic mass and Hamiltonian corrections terms decrease.

Keywords

References

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