Fig. 1
Spin resonance modes in the superconducting phases. INS spectra obtained at the AFM Bragg positions (0.5, 0.5, L) with L = 1, panel (a), and 3, panel (b), for the three samples studied. Data were corrected for background, for the Bose and form factors and normalized to absolute units, see methods section. The spectra were fitted with two log-normal functions corresponding to the two SRM’s at 4 and 8–10 meV. The inset indicates the location in the phase diagram of Ba1−xNaxFe2As2 for the three samples studied.
