2006
DOI: 10.1103/physrevb.73.035110
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Abstract: The complex dielectric functions of single crystals of Gd 5 Si 2 Ge 2 were obtained using spectroscopic ellipsometry ͑SE͒ in the photon energy range of 1.5-5.0 eV at room temperature. Reflectance difference ͑RD͒ spectra for the a-b and b-c planes of single crystals of Gd 5 Si 2 Ge 2 were derived from these dielectric functions and compared to those obtained from reflectance difference spectroscopy ͑RDS͒ at near-normal incidence. The two experimental RD spectra from SE and RDS agreed well. The in-plane optical…

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