Superconductivity under pressure in $R$FeAsO${}_{1-\mathrm{x}}$F${}_{\mathrm{x}}$ ($R$=La, Ce$-$Sm) by dc magnetization measurements

Kiyotaka Miyoshi, Eiko Kojima, Saki Ogawa +2

Superconducting transition under pressure ($P$) has been investigated for optimum-doped $R$FeAsO${}_{1-\mathrm{x}}$F${}_{\mathrm{x}}$ ($R$=La, Ce$-$Sm) by dc magnetization measurements. For $R$=…