Thermo-magnetic hysteretic properties resembling superconductivity in   the normal state of La1.85Sr0.15CuO4
  We have performed detailed magnetic and thermal hysteresis experiments in the normal-state magnetization of La1.85Sr0.15CuO4 single crystal. Using a combination of in-field and in-zero-magnetic-field measurements at different stages of thermal history of the sample, we identified subtle effects associated with the presence of magnetic signatures which resemble those below the superconducting transition temperature (Tc=36 K) but survive up to 250 K. 
M. Majoros, C. Panagopoulos, T. Nishizaki, H. Iwasaki