Fig. 3: Enhancement in low energy magnetic glue for superconductivity on intercalation.
From: Vertex dominated superconductivity in intercalated FeSe
The vertex corrected dynamic and momentum resolved magnetic susceptibility Imχm(ω, q) is shown for (a) n − i, (b) p − d and (c) f − d at 100 K. On intercalation, Im χm(ω, q) becomes more intense at low energies, particularly at q = (1/2, 1/2) which corresponds to the anti-ferromagnetic instability vector in 2-Fe atom unit cell of FeSe. Also with lowering of temperature the low energy structure of Imχm(ω, q) becomes more prominent.
