Direct evidence of magnetic correlations deep inside the superconducting   state of CaFe1.94Co0.06As2
  Imaging local magnetic field distribution in a single crystal of superconductor CaFe1.94Co0.06As2 shows the presence of anomalous remnant magnetization within Meissner like regions of the sample. Close to the superconducting transition temperature we find a coexistence of superconductivity and magnetic correlations. While the magnetic correlations are enhanced with the lowering of temperature, interestingly the area over which the magnetic phase exists shrinks at the expense of a growing superconducting phase in the sample. The coexistence of two phases deep inside the superconducting phase in this compound is maintained within the temperature range that we have explored in our experiment. 
Pabitra Mandal, Gorky Shaw, S. S. Banerjee, Neeraj Kumar, S .K. Dhar   and A. Thamizhavel
cond-mat.supr-con