Электронная структура соединения DyFe-=SUB=-2-=/SUB=-Si-=SUB=-2-=/SUB=-: зонный расчет и оптические исследования

Investigations of electronic structure and optical properties of DyFe2Si2 compound have been carried out. Calculations of the band structure were made with employing local electron density approximation with correction for strong electron correlation effects in the 4f-shells of rare earth metal (GGA+U method). Optical properties were studied by ellipsometric technique in wide wavelength interval. A number of spectral and electronic characteristics were determined. It is shown that the optical conductivity of the compound in interband transitions range is interpreted satisfactorily by means of the density of states calculations.