Conduction Channels of an InAs-Al nanowire Josephson weak link
classification
❄️ cond-mat.mes-hall
cond-mat.supr-con
keywords
channelsconductionjosephsonnanowirenumberachievedalthoughchannel
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We present a quantitative characterization of an electrically tunable Josephson junction defined in an InAs nanowire proximitized by an epitax-ially-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 non-monotonically, the number of independent channels can be tuned, and configurations with a single quasi-ballistic channel achieved.
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