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Comparing tunneling spectroscopy and charge sensing of Andreev bound states in a semiconductor-superconductor hybrid nanowire structure

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arxiv 2105.08871 v1 pith:NTFXGVVP submitted 2021-05-19 cond-mat.mes-hall

Comparing tunneling spectroscopy and charge sensing of Andreev bound states in a semiconductor-superconductor hybrid nanowire structure

classification cond-mat.mes-hall
keywords transportabssandreevboundchargesemiconductor-superconductorsensingspectroscopy
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Transport studies of Andreev bound states (ABSs) are complicated by the interplay of charging effects and superconductivity. Here, we compare transport approaches to ABS spectroscopy in a semiconductor-superconductor island to a charge-sensing approach based on an integrated radio-frequency single-electron transistor. Consistency of the methods demonstrates that fast, non-invasive charge sensing allows accurate quantitative measurement of ABSs while eluding some complexities of transport.

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