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TT: Tiefe Temperaturen
TT 16: Neue und unkonventionelle Supraleiter II
TT 16.8: Talk
Wednesday, March 13, 2002, 16:15–16:30, H18
Optical properties of TaB2: a nonsuperconducting reference compound to MgB2 — •Hendrik Rauf1, Thomas Pichler1,2, Peter M. Oppeneer1, Stefan-Ludwig Drechsler1, Helge Rosner3, Günter Behr1, Shigeki Otani4, Martin Knupfer1, and Jörg Fink1 — 1Institut für Festkörper- und Werkstofforschung Dresden, 01171 Dresden — 2Institut für Materialphysik der Universität Wien — 3Department of Physics, University of California, Davis, CA 95616, USA — 4National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
We report results on the optical properties of a TaB2 single crystal. This compound represents an interesting nonsuperconducting (TC<2K) reference system to the medium-TC superconductor MgB2. We compare experimental and theoretical results for the optical conductivity and find reasonable agreement. The different role of the anisotropic electronic structure in both compounds is discussed.