Current-induced magnetization reversal in SrRuO ₃

We inject current pulses into uniformly magnetized patterns of thin films of the itinerant ferromagnet SrRuO ₃, while monitoring the effective temperature of the patterns during the current injection. We gradually increase the amplitude of the pulses until magnetization reversal occurs. We observe magnetization reversal induced by current above a temperature-dependent threshold and show that this effect is not simply due to sample heating or Oersted fields. We discuss the applicability of the current-induced spin-wave instability scenario.