We report conductance and supercurrent of InAs nanowires coupled to Al-superconducting electrodes with short channel lengths and good Ohmic contacts. The nanowires are suspended 15\,nm above a local gate electrode. The charge density in the nanowires can be controlled by a small change in the gate voltage. For large negative gate voltages, the number of conducting channels is reduced gradually and we observe a stepwise decrease of both conductance and critical current before the conductance vanishes completely.
@article{arxiv.1306.0396,
title = {Quantized conductance and its correlation to the supercurrent in a nanowire connected to superconductors},
author = {Simon Abay and Daniel Persson and Henrik Nilsson and H. Q. Xu and Mikael Fogelström and Vitaly Shumeiko and Per Delsing},
journal= {arXiv preprint arXiv:1306.0396},
year = {2014}
}