Semiconductors Research
Current Projects
Application of few-body techniques to 2D semiconductor materials: This collaborative project involves researchers from Central State University and Brazilian collaborators from Aeronautics Institute of Technology, as well as the Federal University of Ceará. It aims to develop a comprehensive theoretical framework and computational tools to study trions in semiconductor layered materials. The approach employs the Faddeev equations in momentum space, addressing the bound state of three distinct particles interacting with three different pair interactions in two dimensions. We have utilized two different screening schemes for the repulsive electron-electron or hole-hole potential to solve the three coupled Faddeev integral equations for the Rytova-Keldysh interaction. One of these schemes screens the interaction in the infrared region, while the other screens it in the ultraviolet region. Our results demonstrate that both methods provide consistent outcomes for the MoS2 layer, extrapolating the trion energy to the situation without screening. Specifically, we have found a trion binding energy of approximately -50 meV for an exciton energy of approximately −753 meV. This work provides a foundation for future research in this field, with implications for advancing our understanding of the fundamental physics behind semiconductor layered materials and their properties.
Publications:
- K. Mohseni, M. R. Hadizadeh, T. Frederico, D. R. da Costa, A. J. Chaves, Trion clustering structure and binding energy in 2D semiconductor materials: Faddeev equations approach, Phys. Rev. B 107, 165427 (2023)
- Luiz G. M. Tenório, Teldo A. S. Pereira, K. Mohseni, T. Frederico, M. R. Hadizadeh, Diego R. da Costa, and André J. Chaves, Tunable properties of excitons in double monolayer semiconductor heterostructures, Phys. Rev. B 108, 035421 (2023)
Presentations:
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M. R. Hadizadeh, K. Mohseni, A. J. Chaves, D. R. da Costa, T. Frederico, 2023 Fall Meeting of the APS-EGLS, Cleveland State University, Cleveland, Ohio, Oct. 21, 2023. Trions in Monolayer MoS2 using Faddeev Scheme in Momentum Space (talk)
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M. R. Hadizadeh, K. Mohseni, A. J. Chaves, D. R. da Costa, T. Frederico, NNCI Nano+Additive Manufacturing Summit, University of Louisville, Louisville, KY, July 26, 2023. A Numerical Solution of the Schrödinger Equation for Three-Charged Particle Bound Systems Utilizing the Faddeev Technique: A Detailed Analysis of Trions in a MoS2 Layer (talk)
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K. Mohseni, M. R. Hadizadeh, A. J. Chaves, D. R. da Costa, T. Frederico, The 2023 Autumn Meeting of the Brazilian Physical Society (EOSBF-2023), Ouro Preto - MG, Brazil, May 24, 2023. Trion structure in 2D materials: Faddeev equations approach (talk)
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M. R. Hadizadeh, K. Mohseni, T. Frederico, D. R. da Costa, A. J. Chaves, XVI International Conference on Nuclear Structure Properties (NSP2023), Karabük University, Karabük, Türkiye, May 9, 2023. Investigating few-body systems in 2D materials: adapting Faddeev method from nuclear physics (talk)
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M. R. Hadizadeh, K. Mohseni, A. J. Chaves, D. R. da Costa, T. Frederico, APS March Meeting, Las Vegas, Nevada, March 9, 2023. Application of the Faddeev technique to the bound states of three charged particles in two dimensions (talk)
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K. Mohseni, A. J. Chaves, D. R. da Costa, T. Frederico, M. R. Hadizadeh, 20th Brazilian Workshop On Semiconductor Physics, Aeronautics Institute of Technology (ITA), in São José dos Campos, São Paulo, Brazil, September 12, 2022. Few-body Physics in 2D materials (talk)
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Luiz G. M. Tenório, Teldo A S Pereira, K. Mohseni, T. Frederico, M. R. Hadizadeh, D. R. da Costa, and A. J. Chaves, 20th Brazilian Workshop On Semiconductor Physics, Aeronautics Institute of Technology (ITA), in São José dos Campos, São Paulo, Brazil, September 12, 2022. Tunable properties of excitons in double monolayer heterostructures (talk)
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K. Mohseni, A. J. Chaves, D. R. da Costa, T. Frederico, M. R. Hadizadeh, 20th Brazilian Workshop On Semiconductor Physics, Aeronautics Institute of Technology (ITA), in São José dos Campos, São Paulo, Brazil, September 12, 2022. Study negative trion structure in two dimensions using Faddeev equations approach (poster)