Interference, diffraction, and diode effects in superconducting array based on bismuth antimony telluride topological insulator
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2023-12
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en
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11
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Communications Physics, Volume 6, issue 1, pp. 1-11
Abstract
It is well-known in optics that the spectroscopic resolution of a diffraction grating is much better compared to an interference device having just two slits, as in Young’s famous double-slit experiment. On the other hand, it is well known that a classical superconducting quantum interference device (SQUID) is analogous to the optical double-slit experiment. Here we report experiments and present a model describing a superconducting analogue to the diffraction grating, namely an array of superconducting islands positioned on a topological insulator film Bi0.8Sb1.2Te3. In the limit of an extremely weak field, of the order of one vortex per the entire array, such devices exhibit a critical current peak that is much sharper than the analogous peak of an ordinary SQUID. Therefore, such arrays can be used as sensitive absolute magnetic field sensors. A key finding is that the device acts as a superconducting diode, controlled by magnetic field.Description
Funding Information: The work was supported in part by the NSF DMR-2104757 and by the NSF OMA-2016136 Quantum Leap Institute for Hybrid Quantum Architectures and Networks (HQAN). This project has also received funding from the European Union’s Horizon 2020 research and innovation program under Grant Agreement No. 862660/QUANTUM E-LEAPS. We are grateful to D. J. Van Harlingen for useful discussions. | openaire: EC/H2020/862660/EU//QUANTUM E-LEAPS
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Song, X, Suresh Babu, S, Bai, Y, Golubev, D S, Burkova, I, Romanov, A, Ilin, E, Eckstein, J N & Bezryadin, A 2023, ' Interference, diffraction, and diode effects in superconducting array based on bismuth antimony telluride topological insulator ', Communications Physics, vol. 6, no. 1, 177, pp. 1-11 . https://doi.org/10.1038/s42005-023-01288-9