Universality of superconducting gaps in overdoped Ba0.3K0.7Fe2As2 observed by angle-resolved photoemission spectroscopy

K. Nakayama, T. Sato, P. Richard +8

We have performed angle-resolved photoemission spectroscopy on the overdoped Ba${}_{0.3}$K${}_{0.7}$Fe${}_2$As${}_2$ superconductor ($T_c$ = 22 K). We demonstrate that the superconducting…