Bjørneklett, A.; Borg, A.; Hunderi, O. - In: Physica A: Statistical Mechanics and its Applications 157 (1989) 1, pp. 164-170
The dielectric function of YBa2Cu3O7 has been measured by spectroscopic ellipsometry in the spectral range 0.5–4.0 eV. Spectra were obtained at room temperature (300 K) and 80 K. The spectra at the two temperatures were nearly identical. The imaginary part of the dielectric function ε2 has...