Supercurrent on a vortex core in 2H-NbSe2: Current-driven scanning tunneling spectroscopy measurements

P. Rodiere provided us with the 2H-NbSe2 sample.We acknowledge support from MINECO and MEC of Spain (the Consolider Ingenio Molecular Nanoscience CSD2007-00010 program, FIS2011-23488, ACI-2009-0905, and an FPU grant), of COST MP1201, and of the Comunidad de Madrid through the Nanobiomagnet program