1. Conduction channels of an InAs-Al nanowire Josephson weak link.
- Author
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Goffman, M. F., Urbina, C., Pothier, H., Nygård, J., Marcus, C. M., and Krogstrup, P.
- Subjects
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NANOWIRES , *JOSEPHSON effect , *SUPERCONDUCTIVITY , *CURRENT-voltage characteristics , *NANOSTRUCTURED materials - Abstract
Wepresent a quantitative characterization of an electrically tunable Josephson junction defined in an InAs nanowire proximitized by an epitaxially-grown superconducting Al shell. The gate-dependence of the number of conduction channels and of the set of transmission coefficients are extracted from the highly nonlinear current-voltage characteristics. Although the transmissions evolve nonmonotonically, the number of independent channels can be tuned, and configurations with a single quasi-ballistic channel achieved. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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