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TT: Fachverband Tiefe Temperaturen

TT 27: CE: Poster Session

TT 27.9: Poster

Mittwoch, 24. März 2010, 14:00–18:00, Poster D1

Superconductivity in the hybrid dichalcogenide 18R-SnSe₂{CoCp₂}_x — •Michael Herzinger, Robert Miller, Sandra Altmannshofer, Ernst–Wilhelm Scheidt, and Wolfgang Scherer — Lehrstuhl für Chemische Physik und Materialwissenschaft, Institut für Physik, Universität Augsburg, 86159 Augsburg, Germany

We report on electronical and thermodynamical properties of the superconducting hybrid materials 18R-SnSe₂{CoCp₂}_x (0<x<0.25). These materials were synthesized by intercalation of the host layered dichalcogene SnSe₂ with the organometalic compound cobaltocene (CoCp₂).

These materials indicate a highly anisotropic superconducting behavior, which is observed in resistivity as well as susceptibility measurements parallel and perpendicular to the SnSe₂-layers. This is also reflected in the coherence length ratio, e.g. for 18R-SnSe₂{CoCp₂}_0.1, perpendicular to the layers of ξ_⊥(0) = 7 Å and parallel ξ_||(0) = 717 Å.

This study was done for different CoCp₂-concentration and demonstrates a quasi two-dimensional superconductor with designable physical properties depending on the degree of intercalation.