Crystal structures and sign reversal Hall resistivities in iron-based superconductors Lix(C3H10N2)0.32FeSe |
(a) Powder x-ray diffraction patterns of Lix(C3H10N2)yFeSe, with inset showing enlarge view of XRD patterns of x = 0.15 and 0.25, and (b) enlarged view of (00l) peak, showing a two-phase region between x = 0.15 and x = 0.25. |