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- W4322760111 abstract "Hybrid Josephson junctions with three or more superconducting terminals coupled to a semiconducting region are expected to exhibit a rich variety of phenomena. Andreev bound states (ABSs) arising in such multiterminal devices have been predicted to form unconventional energy band structures, which can be engineered by controlling superconducting phase differences between the individual terminals. Here we report tunnelling spectroscopy measurements of three-terminal Josephson junctions (3TJJs) realised in a gate-tunable InAs/Al heterostructure. The three terminals are connected to form two loops where phase differences are independently controlled. Our results provide a demonstration of phase control over a novel Andreev band structure. Signatures of hybridisation between ABSs, consistent with their overlap in the 3TJJ region, are observed in the form of avoided crossings in the spectrum and are well explained by a numerical model. Future extensions of this work could focus on addressing spin-resolved energy levels, ground state parity transitions and Weyl bands in multiterminal geometries." @default.
- W4322760111 created "2023-03-03" @default.
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- W4322760111 date "2023-02-28" @default.
- W4322760111 modified "2023-09-27" @default.
- W4322760111 title "Hybridisation of Andreev bound states in three-terminal Josephson junctions" @default.
- W4322760111 doi "https://doi.org/10.48550/arxiv.2302.14535" @default.
- W4322760111 hasPublicationYear "2023" @default.
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