Non-local effect in superconducting nanowires

The template-free fabrication of superconducting wires with nanometric control opens fascinating research fields in condensed-matter physics. Ga$^{+}$-based focused ion beam induced deposition (FIBID) technique is utilized for the fabrication of W- based superconducting nanostructures using W(CO)$_{6}$ as the precursor material. This type II superconducting material presents superconducting properties below 5 K and fits correctly to the BCS theory. In this contribution, we report a non-local electrical signal observed in superconducting W- based nanowires (NWs) grown by FIBID. Thus, by applying a bias current in an upper horizontal NW, the generated Lorentz-type force pushes the vortex lattice through a connected vertical NW, and this vortex motion is detected as a non-local voltage in a connected lower horizontal NW, where no current is present. The weak pinning in our material combined with a vortex density determined by the external magnetic field, lead to an efficient driving force of the vortex lattice through the vertical NW. We notice that a non-local signal of 0.42 $\mu $V can be propagated through long distances -above three micrometers- compared to the intervortex distance (only a few nanometers) of the Abrikosov vortex lattice.