Pressure-induced quantum critical point in a heavily hydrogen-doped iron-based superconductor LaFeAsO

Masayoshi Takeuchi, Naoki Fujiwara, Takanori Kuwayama +6

An iron-based superconductor LaFeAsO${}_{1-x}$H${}_x$ (0 $\le x\le$ 0.6) undergoes two antiferromagnetic (AF) phases upon H doping. We investigated the second AF phase ($x$=0.6) usi…