Optical Pseudogap from Iron States in AFe4Sb12 (A=Yb, Ca, Ba)
نویسندگان
چکیده
J. Sichelschmidt, H.J. Im, S. Kimura, V. Voevodin, H. Rosner, W. Schnelle, A. Leithe-Jasper, J.A. Mydosh, Yu. Grin, F. Steglich Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany School of Physical Sciences, The Graduate University for Advanced Studies, Okazaki 444-8585 Japan UVSOR Facility, Institute for Molecular Science, Okazaki 444-8585 Japan II. Physikalisches Institut, Universität zu Köln, 50937 Köln, Germany
منابع مشابه
Optical pseudogap from iron states in filled skutterudites AFe4Sb12 (A=Yb, Ca, Ba).
Optical investigations are presented of the filled skutterudites AFe4Sb12 with divalent cations A=Yb, Ca, Ba. For each of these compounds a very similar pseudogap structure in the optical conductivity develops in the far-infrared spectral region at temperatures below 90 K. Highly accurate local-density approximation electronic band structure calculations can consistently explain the origin of t...
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Temperature-dependent interplane resistivity ρc(T ) was measured systematically as a function of transitionmetal substitution in the iron-arsenide superconductors Ba(Fe1−xMx)2As2, M = Ni, Pd, Rh. The data are compared with the behavior found in Ba(Fe1−xCox)2As2, revealing resistive signatures of pseudogap. In all compounds we find resistivity crossover at a characteristic pseudogap temperature ...
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