The optical dielectric function of the ac plane of rare-earth cuprate (R(2)CuO(4)) single crystals in the energy range 1.2-2.7 eV is measured in reflection by a polarimetric method. The dispersion of optical anisotropy in insulating samples is described by two oscillators separated by 0.4 eV. Conducting samples can be identified by a Drude-like contribution. The sensitivity of the applied method allows us to test surface quality and the influence of electric transport properties on optical anisotropy.
机构:
TOHOKU UNIV, IRON STEEL & OTHER MET RES INST, OARAI BRANCH, OARAI, BARAKI 31113, JAPANTOHOKU UNIV, IRON STEEL & OTHER MET RES INST, OARAI BRANCH, OARAI, BARAKI 31113, JAPAN
KENJO, T
YAJIMA, S
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机构:
TOHOKU UNIV, IRON STEEL & OTHER MET RES INST, OARAI BRANCH, OARAI, BARAKI 31113, JAPANTOHOKU UNIV, IRON STEEL & OTHER MET RES INST, OARAI BRANCH, OARAI, BARAKI 31113, JAPAN