Current effect on the voltage noise near the transition region in YBa2Cu3O7-delta single crystal thin films

The voltage noise measurements have been realized on high critical temperat ure superconductors (H. T. S. C). The current, the temperature, the applied magnetic field and the frequency dependence of the voltage noise were stud ied. Measurements have been realized on a large range of temperature and di fferent current values in magnetic field up to 14 T. Our results show clear ly that the voltage noise depends strongly on the current crossing the samp le. A peak in the temperature dependence of the noise was found near the tr ansition region temperature.