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H. Michor:
"Single crystal studies of CDW physics in quasi-1D metals RNiC₂ with R= Lu and Y";
Vortrag: Seminar at the Solid State Physics and Chemistry Laboratory, Division of Chemistry, Graduate School of Science, Kyoto University, Kyoto, Japan (eingeladen); 03.10.2019.

Ternary carbides RNiC₂ (R = La, .. Lu, Y) crystallize in the non-centrosymmetric orthorhombic CeNiC₂-type structure, space group Amm2. These compounds attracted attention already for two decades, because of various interesting properties such as exotic superconductivity in LaNiC₂, observation of charge density wave (CDW) formation related to quasi-one-dimensional electronic features and Fermi surface nesting in RNiC₂ with R = Pr, ..., Lu, Y, and, finally, a complex interplay of CDW ordering with rare earth magnetism in RNiC₂.
In the present talk, we report on crystal growth, crystallographic characteristics and electronic properties studied by specific heat, electrical resistivity as well as magneto-resistance and Hall resistance measurements with focus on systems without rare earth magnetism: YNiC₂ and LuNiC₂. Our experimental studies on YNiC₂ and LuNiC₂ are supplemented by DFT electronic structure studies aiming to reveal Fermi surface features related to CDW ordering as well as interrelations between features and anisotropy of electronic transport properties and the Fermi surface topology.

charge density wave, electronic properties, YNiC2, LuNiC2