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arXiv · 1306.0396

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

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

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.

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Simon Abay, Daniel Persson, Henrik Nilsson, H. Q. Xu, Mikael Fogelström, Vitaly Shumeiko, Per Delsing. 2013-06-03. Quantized conductance and its correlation to the supercurrent in a nanowire connected to superconductors. https://doi.org/10.1021/nl4014265

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