Electron-phonon interaction and spectral weight transfer in Fe${}_{1-x}$Co${}_x$Si

D. Menzel, P. Popovich, N. N. Kovaleva +3

A comprehensive ellipsometric study was performed on Fe${}_{1-x}$Co${}_x$Si single crystals in the spectral range from 0.01 eV to 6.2 eV. Direct and indirect band gaps of 73 meV and…