Se content $x$ dependence of electron correlation strength in Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$

L. C. C. Ambolode, K. Okazaki, M. Horio +13

The iron chalcogenide Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$ on the Te-rich side is known to exhibit the strongest electron correlations among the Fe-based superconductors, and is non-superc…