Role of the Ce valence in the coexistence of superconductivity and ferromagnetism of CeO${}_{1-x}$F${}_x$BiS${}_2$ revealed by Ce $L_3$-edge x-ray absorption spectroscopy

Takuya Sugimoto, Boby Joseph, Eugenio Paris +6

We have performed Ce $L_3$-edge x-ray absorption spectroscopy (XAS) measurements on CeO${}_{1-x}$F${}_x$BiS${}_2$, in which the superconductivity of the BiS${}_2$ layer and the ferromagnet…