It was found that the superconducting transition temperatureis strongly affected by the pnictogen heightfrom the Fe-plane that controls the electron correlation strength and the size of thehole Fermi surface (FS). With increasing, weak coupling BCS superconductivity switches to the strong coupling non...
Importance of [Formula: see text] orbital and electron correlation in iron-based superconductors revealed by phase diagram for 1111-system.The structural flexibility at three substitution sites in LaFeAsO enabled investigation of the relation between superconductivity and structural parameters over a wide...