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Computational and experimental approach for investigation of optical properties of single-crystal MnGa2Se4.
- Source :
- Canadian Journal of Physics; 2024, Vol. 102 Issue 5, p299-306, 8p
- Publication Year :
- 2024
-
Abstract
- In the presented work, we propose a systematic investigation of the electronic and optical properties of MnGa<subscript>2</subscript>Se<subscript>4</subscript> by combining the spectroscopic ellipsometry carried out at room temperature in the spectral range of 1–4 eV and density functional theory (DFT) calculations. Ellipsometric measurements were collected at an incidence angle between 60° and 75° with a 5° step. The optical direct gap energies of MnGa<subscript>2</subscript>Se<subscript>4</subscript> were estimated from the linear extrapolation of the absorption coefficients that were verified by band structure calculation. DFT calculation of the imaginary part ɛ shows that first critical point occurs at 2.46 eV and represents the direct optical transition at Γ point. The total magnetic moment of compound is 3.38 mB. The major contribution in total magnetic moment is due to 3d state of Mn atoms. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00084204
- Volume :
- 102
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Canadian Journal of Physics
- Publication Type :
- Academic Journal
- Accession number :
- 176933213
- Full Text :
- https://doi.org/10.1139/cjp-2023-0255