Quantized conductance and its correlation to the supercurrent in a nanowire connected to superconductors.
basic_science · Level V
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- Record sourced from PubMed, PMID 23898893.
- Also identified by DOI 10.1021/nl4014265.
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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.