Superconductivity induced by spark erosion in ZrZn2

E. A. Yelland, S. M. Hayden, S. J. C. Yates +8

We show that the superconductivity observed recently in the weak itinerant ferromagnet ZrZn2 [C. Pfleiderer et al., Nature (London) 412, 58 (2001)] is due to remnants of a supercon…