Supercurrent rectification and magnetochiral effects in symmetric Josephson junctions.
Journal
Nature nanotechnology
ISSN: 1748-3395
Titre abrégé: Nat Nanotechnol
Pays: England
ID NLM: 101283273
Informations de publication
Date de publication:
Jan 2022
Jan 2022
Historique:
received:
19
03
2021
accepted:
16
08
2021
pubmed:
20
11
2021
medline:
20
11
2021
entrez:
19
11
2021
Statut:
ppublish
Résumé
Transport is non-reciprocal when not only the sign, but also the absolute value of the current depends on the polarity of the applied voltage. It requires simultaneously broken inversion and time-reversal symmetries, for example, by an interplay of spin-orbit coupling and magnetic field. Hitherto, observation of nonreciprocity was tied to resistivity, and dissipationless non-reciprocal circuit elements were elusive. Here we engineer fully superconducting non-reciprocal devices based on highly transparent Josephson junctions fabricated on InAs quantum wells. We demonstrate supercurrent rectification far below the transition temperature. By measuring Josephson inductance, we can link the non-reciprocal supercurrent to an asymmetry of the current-phase relation, and directly derive the supercurrent magnetochiral anisotropy coefficient. A semiquantitative model explains well the main features of our experimental data. Non-reciprocal Josephson junctions have the potential to become for superconducting circuits what pn junctions are for traditional electronics, enabling new non-dissipative circuit elements.
Identifiants
pubmed: 34795437
doi: 10.1038/s41565-021-01009-9
pii: 10.1038/s41565-021-01009-9
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
39-44Subventions
Organisme : Deutsche Forschungsgemeinschaft (German Research Foundation)
ID : Project-ID 314695032 - SFB 1277 (Subproject B08)
Organisme : Deutsche Forschungsgemeinschaft (German Research Foundation)
ID : Project-ID 314695032 - SFB 1277 (Subproject B05 and B07)
Organisme : EC | Horizon 2020 Framework Programme (EU Framework Programme for Research and Innovation H2020)
ID : Grant Agreement No. 881603 (Graphene Flagship Core 3)
Organisme : Microsoft
ID : Microsoft Quantum
Informations de copyright
© 2021. The Author(s), under exclusive licence to Springer Nature Limited.
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