Effects of Pnictogen Atmosphere Annealing in Fe${}_{1+y}$Te${}_{0.6}$Se${}_{0.4}$

Tatsuhiro Yamada, Yue Sun, Sunseng Pyon +1

It has been clarified that bulk superconductivity in Fe${}_{1+y}$Te${}_{0.6}$Se${}_{0.4}$ can be induced by annealing in an appropriate atmosphere to remove the harmful effects of excess…