Publikation:

Flux-Tunable Josephson Diode Effect in a Hybrid Four-Terminal Josephson Junction

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2024

Autor:innen

Coraiola, Marco
Haxell, Daniel Z.
Sabonis, Deividas
Hinderling, M.
ten Kate, Sofieke C.
Cheah, Erik
Krizek, Filip
Schott, Rüdiger
Wegscheider, Werner
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URI (zitierfähiger Link)
http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1mr2zpl61577j2
DOI (zitierfähiger Link)
https://doi.org/10.1021/acsnano.4c01642
ArXiv-ID
http://arxiv.org/abs/2312.04415

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oops

Angaben zur Forschungsförderung

Swiss National Science Foundation: 200020_207538
Deutsche Forschungsgemeinschaft (DFG): 425217212
Deutsche Forschungsgemeinschaft (DFG): 467596333
European Union (EU): 804273
Swiss National Science Foundation: 200021_201082

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Open Access Hybrid

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Physik: Publikationen
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Published

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ACS Nano. ACS Publications. 2024, 18(12), S. 9221-9231. ISSN 1936-0851. eISSN 1936-086X. Verfügbar unter: doi: 10.1021/acsnano.4c01642

Zusammenfassung

We investigate the direction-dependent switching current in a flux-tunable four-terminal Josephson junction defined in an InAs/Al two-dimensional heterostructure. The device exhibits the Josephson diode effect with switching currents that depend on the sign of the bias current. The superconducting diode efficiency, reaching a maximum of |η| ≈ 34%, is widely tunable─both in amplitude and sign─as a function of magnetic fluxes and gate voltages. Our observations are supported by a circuit model of three parallel Josephson junctions with nonsinusoidal current–phase relation. With respect to conventional Josephson interferometers, phase-tunable multiterminal Josephson junctions enable large diode efficiencies in structurally symmetric devices, where local magnetic fluxes generated on the chip break both time-reversal and spatial symmetries. Our work presents an approach for developing Josephson diodes with wide-range tunability that do not rely on exotic materials.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
530 Physik

Schlagwörter

Mesoscale and Nanoscale Physics, Superconductivity, Superconducting diode effect, multiterminal Josephson junction, superconductor-semiconductor hybrid, 2DEG, nonreciprocal transport

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ISO 690CORAIOLA, Marco, Aleksandr SVETOGOROV, Daniel Z. HAXELL, Deividas SABONIS, M. HINDERLING, Sofieke C. TEN KATE, Erik CHEAH, Filip KRIZEK, Rüdiger SCHOTT, Werner WEGSCHEIDER, Juan Carlos CUEVAS, Wolfgang BELZIG, Fabrizio NICHELE, 2024. Flux-Tunable Josephson Diode Effect in a Hybrid Four-Terminal Josephson Junction. In: ACS Nano. ACS Publications. 2024, 18(12), S. 9221-9231. ISSN 1936-0851. eISSN 1936-086X. Verfügbar unter: doi: 10.1021/acsnano.4c01642
BibTex
@article{Coraiola2024-03-15FluxT-69133.2,
  year={2024},
  doi={10.1021/acsnano.4c01642},
  title={Flux-Tunable Josephson Diode Effect in a Hybrid Four-Terminal Josephson Junction},
  number={12},
  volume={18},
  issn={1936-0851},
  journal={ACS Nano},
  pages={9221--9231},
  author={Coraiola, Marco and Svetogorov, Aleksandr and Haxell, Daniel Z. and Sabonis, Deividas and Hinderling, M. and ten Kate, Sofieke C. and Cheah, Erik and Krizek, Filip and Schott, Rüdiger and Wegscheider, Werner and Cuevas, Juan Carlos and Belzig, Wolfgang and Nichele, Fabrizio}
}
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