标题：Importance of usepackage usepackage usepackage usepackage begin }_}}end d xy orbital and electron correlation in iron-based superconductors revealed by phase diagram for 1111-system
摘要：The structural flexibility at three substitution sites in LaFeAsO enabled investigation of the relation between superconductivity and structural parameters over a wide range of crystal compositions. Substitutions of Nd for La, Sb or P for As, and F or H for O were performed. All these substitutions modify the local structural parameters, while the F/H-substitution also changes band filling. It was found that the superconducting transition temperature
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