BaFe_2(As_{1-x}P_x)_2—A Quantum Critical Superconductor

Among the large variety of iron-based superconductors the BaFe\(_2\)(As\(_{1-x}\)P\(_x\))\(_2\) series is special. The isovalent substitution allows changes in the electronic structure to be linked to the crystal structure rather than additional doping and high quality single crystals are available throughout the phase diagram, which allows the study of a variety of properties with high precision.