Interplay between magnetism and superconductivity in the iron pnictides
Interplay between magnetism and superconductivity in the iron pnictides
We consider phase transitions and potential coexistence of spin-density-wave (SDW) magnetic order and extended $s$-wave $({s}^{+})$ superconducting order within a two-band itinerant model of iron pnictides in which SDW magnetism and ${s}^{+}$ superconductivity are competing orders. We show that depending on parameters, the transition between these two states is either …