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H. Michor:
"Crystal growth and studies of CDW physics in quasi-1D metals RNiC₂";
Vortrag: Joint seminar of the Department of Condensed Matter Physics (DCMP) and the Materials Growth and Measurement Laboratory (MGML), Charles University Prague, Prag CZ (eingeladen); 28.03.2019.

Ternary carbides RNiC₂ (R = La, .. Lu, Y) and RCoC₂ (R = Nd, .. Lu) 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, magnetic and electronic properties studied by magnetization, specific heat and electrical resistivity as well as magneto-resistance measurements with focus on systems without rare earth magnetism: YNiC₂ and LuNiC₂. Our experimental studies on YNiC₂ and LuNiC2are 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.