Origin of Pressure-induced Superconducting Phase in K${}_x$Fe${}_{2-y}$Se${}_2$ studied by Synchrotron X-ray Diffraction and Spectroscopy

Yoshiya Yamamoto, Hitoshi Yamaoka, Masashi Tanaka +12

Pressure dependence of the electronic and crystal structures of K${}_x$Fe${}_{2-y}$Se${}_2$, which has pressure-induced two superconducting domes of SC I and SC II, was investigated…