Dynamic approach to finite-temperature magnetic phase transitions in the extended J1- J2 model with vacancy order

N. J. Zhou, B. Zheng, J. H. Dai

The recently discovered iron-based superconductors A${}_y$Fe${}_{2-x}$Se${}_2$ ($A$=K, Rb, Cs, Tl) show a long-range antiferromagnetic order with an unexpected high transition temper…