Dominant non-local superconducting proximity effect due to electron-electron interaction in a ballistic double nanowire
arXiv:1810.04832 · doi:10.1126/sciadv.aaw2194
Abstract
Cooper pair splitting (CPS) can induce non-local correlation between two normal conductors coupling to a superconductor. CPS into a double one-dimensional electron gas is an appropriate platform for extracting large amount of entangled electron pairs and one of the key ingredients for engineering Majorana Fermions with no magnetic field. Here we study CPS using a Josephson junction of a gate-tunable ballistic InAs double nanowire. The measured switching current into the two nanowires significantly larger than sum of that into the respective nanowires, indicating the inter-wire superconductivity dominant compared to the intra-wire superconductivity. From dependence on the number of propagating channels in the nanowires, the observed CPS is assigned to one-dimensional electron-electron interaction. Our results will pave the way for utilizing one-dimensional electron-electron interaction to reveal physics of high-efficient CPS and engineer Majorana Fermions in double nanowire systems via CPS.
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Cited by in corpus (20)
- Real-time observation of Cooper pair splitting showing strong non-local correlations
- Observation of nonlocal Josephson effect on double InAs nanowires
- Phase-dependent Andreev molecules and superconducting gap closing in coherently coupled Josephson junctions
- Engineering of anomalous Josephson effect in coherently coupled Josephson junctions
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- Half-Integer Shapiro Steps in a Short Ballistic InAs Nanowire Josephson Junction
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