Effects of fabrication routes and material parameters on the control of superconducting currents by gate voltage

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2023
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Elalaily, Tosson
Puglia, Claudio
Ivanov, Yurii P.
Joint, Francois
Berke, Martin
Iorio, Andrea
Makk, Peter
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The control of a superconducting current via the application of a gate voltage has been recently demonstrated in a variety of superconducting devices. Although the mechanism underlying this gate-controlled supercurrent (GCS) effect remains under debate, the GCS effect has raised great interest for the development of the superconducting equivalent of conventional metal-oxide semiconductor electronics. To date, however, the GCS effect has been mostly observed in superconducting devices made by additive patterning. Here, we show that devices made by subtractive patterning show a systematic absence of the GCS effect. Doing a microstructural analysis of these devices and comparing them to devices made by additive patterning, where we observe a GCS, we identify some material and physical parameters that are crucial for the observation of a GCS. We also show that some of the mechanisms proposed to explain the origin of the GCS effect are not universally relevant.

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530 Physik
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General Engineering, General Materials Science, superconductivity
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ISO 690RUF, Leon, Tosson ELALAILY, Claudio PUGLIA, Yurii P. IVANOV, Francois JOINT, Martin BERKE, Andrea IORIO, Peter MAKK, Giorgio DE SIMONI, Simone GASPARINETTI, Giorgio DIVITINI, Szabolcs CSONKA, Francesco GIAZOTTO, Elke SCHEER, Angelo DI BERNARDO, 2023. Effects of fabrication routes and material parameters on the control of superconducting currents by gate voltage. In: APL Materials. AIP Publishing. 2023, 11(9), 091113. eISSN 2166-532X. Available under: doi: 10.1063/5.0159750
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@article{Ruf2023-09-20Effec-67847,
  year={2023},
  doi={10.1063/5.0159750},
  title={Effects of fabrication routes and material parameters on the control of superconducting currents by gate voltage},
  number={9},
  volume={11},
  journal={APL Materials},
  author={Ruf, Leon and Elalaily, Tosson and Puglia, Claudio and Ivanov, Yurii P. and Joint, Francois and Berke, Martin and Iorio, Andrea and Makk, Peter and De Simoni, Giorgio and Gasparinetti, Simone and Divitini, Giorgio and Csonka, Szabolcs and Giazotto, Francesco and Scheer, Elke and Di Bernardo, Angelo},
  note={Article Number: 091113}
}
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