1306.0396 (Simon Abay et al.)

Quantized conductance and its correlation to the supercurrent in a
nanowire connected to superconductors    [PDF]

Simon Abay, Daniel Persson, Henrik Nilsson, H. Q. Xu, Mikael Fogelström, Vitaly Shumeiko, Per Delsing

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.

View original: http://arxiv.org/abs/1306.0396