“…Firstly, the striped anti-ferromagnetic (S-AFM) states are the ground states of their parent samples taking (Na, Li)FeAs, 4,22,23) (Sr, Ba, Ca, Eu)Fe 2 As 2 , [24][25][26][27][28][29] LnOFeAs [30][31][32][33] (Ln = La, Nd, Ce, Pr), (Ca, Sr)FeAsF, [34][35][36] and (Sr 2 VO 3 ) 2 Fe 2 As 2 37) for example. Secondly, generally, the iron arsenide superconductors have the property of nested Fermi surfaces, taking (Ba, Sr)Fe 2 As 2 , 38,39) LaOFeAs, 40) and (Sr 2 VO 3 ) 2 Fe 2 As 2 41,42) for instance. The competition between magnetic order and superconductivity is one of the main features of iron-based superconductors.…”