Universal linear-temperature dependence of static magnetic   susceptibility in iron-pnictides
  A universal linear-temperature dependence of the uniform magnetic susceptibility has been observed in the nonmagnetic normal state of iron-pnictides. This non-Pauli and non-Curie-Weiss-like paramagnetic behavior cannot be understood within a pure itinerant picture. We argue that it results from the existence of a wide antiferromagnetic fluctuation window in which the local spin-density-wave correlations exist but the global directional order has not been established yet. 
Guang-Ming Zhang, Yue-Hua Su, Zhong-Yi Lu, Zheng-Yu Weng, Dung-Hai   Lee, Tao Xiang