Signatures of quantum criticality in hole-doped and chemically pressurized EuFe_2As_2 single crystals

J. Maiwald, H. S. Jeevan, P. Gegenwart

We study the effect of hole-doping and chemical pressure (isovalent doping) in single crystals of K${}_x$Eu${}_{1-x}$Fe${}_2$As${}_2$ and EuFe${}_2$(As${}_{1-y}$P${}_y$)${}_2$, respectively, by me…