Figure 5.
Non-local voltage versus field. (a) V(B) obtained from TDGL simulations at current density J = 0.05JGL, where interesting features are denoted with black dots (1)–(4). (b) Snapshots of the vortex distribution at four points corresponding to (a). (1) the maximal voltage, corresponding to the field value for which J = Jc(B), (2) increased local vortex motion at the current contacts slightly above Jc(B), (3) state of high dissipation in the current leads, (4) normal-state cut-off point. The vortex density gradient along the path of the NW is accounted for by the decay in momentum transfer that occurs along the longitudinal section of the NW, and by finite size effects in the leads: their presence and the existence of sharp corners create effective barrier walls at the crossing points between the leads and the longitudinal section of the nanowire which distort and compress the lattice.