We have established a plot of the anion height dependence of superconducting transition temperature T c for the typical Fe-based superconductors. The plot showed a symmetric curve with a peak around 1.38 Å. Both data at ambient pressure and under high pressure obeyed the unique curve. This plot will be one of the key strategies for both understanding the mechanism of Fe-based superconductivity and searching for the new Fe-based superconductors with higher T c .
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Mizuguchi et al. (2010) studied this question.
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