Collective infrared excitation in rare-earth Gd${}_x$La${}_{1-x}$B${}_6$ hexaborides

E. S. Zhukova, B. P. Gorshunov, G. A. Komandin +8

Using Fourier-transform infrared spectroscopy and optical ellipsometry, room temperature spectra of complex conductivity of single crystals of hexaborides Gd${}_x$La${}_{1-x}$B${}_6$, $x…