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Prediction of a Paramagnetic Meissner Effect in Voltage-Biased Superconductor-Normal-Metal Bilayers

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2020

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Ouassou, Jabir Ali
Linder, Jacob

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https://doi.org/10.1103/PhysRevLett.124.047001
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http://arxiv.org/abs/1902.09014

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Physical review letters. American Physical Society (APS). 2020, 124(4), 047001. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.124.047001

Zusammenfassung

Conventional superconductors respond to external magnetic fields by generating diamagnetic screening currents. However, theoretical work has shown that one can engineer systems where the screening current is paramagnetic, causing them to attract magnetic flux-a prediction that has recently been experimentally verified. In contrast to previous studies, we show that this effect can be realized in simple superconductor-normal-metal structures with no special properties, using only a simple voltage bias to drive the system out of equilibrium. This is of fundamental interest, since it opens up a new avenue of research, and at the same time highlights how one can realize paramagnetic Meissner effects without having odd-frequency states at the Fermi level. Moreover, a voltage-tunable electromagnetic response in such a simple system may be interesting for future device design.

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ISO 690OUASSOU, Jabir Ali, Wolfgang BELZIG, Jacob LINDER, 2020. Prediction of a Paramagnetic Meissner Effect in Voltage-Biased Superconductor-Normal-Metal Bilayers. In: Physical review letters. American Physical Society (APS). 2020, 124(4), 047001. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.124.047001
BibTex
@article{Ouassou2020-01-31Predi-49198,
  year={2020},
  doi={10.1103/PhysRevLett.124.047001},
  title={Prediction of a Paramagnetic Meissner Effect in Voltage-Biased Superconductor-Normal-Metal Bilayers},
  number={4},
  volume={124},
  issn={0031-9007},
  journal={Physical review letters},
  author={Ouassou, Jabir Ali and Belzig, Wolfgang and Linder, Jacob},
  note={Article Number: 047001}
}
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