The Structure of Electronic States in FeSb2 According to Optical Spectroscopy and Band Calculations
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The electronic structure and optical properties of a binary intermetallic FeSb2 compound are studied. The calculations of the band structure, that demonstrate the existence of a narrow ∼0.3 eV gap in the energy spectrum of this material, are performed in the approximation of a local electronic density. Spectral characteristics are studied by the ellipsometric method within a 0.22–18 μm range of wavelengths. It is shown that, in the region of interband transitions, the experimental optical conductivity of the compound is satisfactorily interpreted within the performed calculations of the density of electronic states.
This work was performed within the State Assignment of the Ministry of Education and Science of the Russian Federation (theme “Electron,” no. АААА-А18-118020190098-5) under a partial support of the Russian Foundation for Basic Research (project no. 17-52-45056).
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