Research: Pnictide Chalkogenides

Pnictide Chalcogenides/non-magnetic Kondo-Behavior

Pnictide chalcogenides of metals like Uranium, Thorium, Zirconium and Hafnium exhibit a non-magnetic Kondo-behavior at low temperatures, which currently stimulates research in solid state physics. The phase relationships, crystal structures and homogeneity ranges of involved phases are mostly unknown. The dependencies of physical properties on the chemical composition and crystal structures are expected to give insights in the physical background. An important project of several groups from solid state chemistry and physics focus (Institute of Low Temperature and Structure Research, Wroclaw, Poland und Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden) is dedicated to the detailed analysis of these and related rare-earth metal systems.

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Electrical resistivity and heat capacity of a crystal with the chemical composition ZrAs1.4Se0.5 as function of the temperature. Upper inset: low temperature range of the resistivity < 19 K with and without applied external magnetic field.