Revealing the intrinsic superconducting gap anisotropy in surface-neutralized BaFe${}_2$(As${}_{0.7}$P${}_{0.3}$)${}_2$

Ziming Xin, Yudi Wang, Cong Cai +4

Alkaline-earth iron arsenide (122) is one of the most studied families of iron-based superconductors, especially for angle-resolved photoemission spectroscopy. While extensive phot…