by Yu Chen, S. D. Snyder, and A. M. Goldman in Physical Review Letters 103, 127002 (2009).

Four-terminal resistance measurements have been carried out on Zn nanowires formed using electronbeam lithography. When driven resistive by current, these wires reenter the superconducting state upon application of small magnetic fields. The data are qualitatively different from those of previous experiments
on superconducting nanowires, which revealed either negative magnetoresistance near Tc or highmagnetic-field-enhanced critical currents.