Gate-tunable Josephson diode in proximitized InAs supercurrent interferometers
The Josephson diode (JD) is a nonreciprocal circuit element that supports a larger critical current in one direction compared to the other. This effect has gained growing interest because of promising applications in superconducting electronic circuits with low power consumption. Some implementation...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2023-08-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.5.033131 |
| _version_ | 1827285208677744640 |
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| author | Carlo Ciaccia Roy Haller Asbjørn C. C. Drachmann Tyler Lindemann Michael J. Manfra Constantin Schrade Christian Schönenberger |
| author_facet | Carlo Ciaccia Roy Haller Asbjørn C. C. Drachmann Tyler Lindemann Michael J. Manfra Constantin Schrade Christian Schönenberger |
| author_sort | Carlo Ciaccia |
| collection | DOAJ |
| description | The Josephson diode (JD) is a nonreciprocal circuit element that supports a larger critical current in one direction compared to the other. This effect has gained growing interest because of promising applications in superconducting electronic circuits with low power consumption. Some implementations of a JD rely on breaking the inversion symmetry in the material used to realize Josephson junctions (JJs), but recent theoretical proposals have suggested that the effect can also be engineered by combining two JJs hosting highly transmitting Andreev bound states in a Superconducting Quantum Interference Device (SQUID) at a small, but finite flux bias. We have realized a SQUID with two JJs fabricated in a proximitized InAs two-dimensional electron gas (2DEG). We demonstrate gate control of the diode efficiency from zero up to around 30% at specific flux bias values which comes close to the maximum of ∼40% predicated in Souto et al. [Phys. Rev. Lett. 129, 267702 (2022)0031-900710.1103/PhysRevLett.129.267702]. The key ingredients to the JD effect in the SQUID arrangement is the presence of highly transmitting channels in the JJs, a flux bias, and an asymmetry between the two SQUID arms. |
| first_indexed | 2024-04-24T10:11:07Z |
| format | Article |
| id | doaj.art-d6ab016c4b1542159c61e103a8cf4ab6 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:11:07Z |
| publishDate | 2023-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-d6ab016c4b1542159c61e103a8cf4ab62024-04-12T17:33:31ZengAmerican Physical SocietyPhysical Review Research2643-15642023-08-015303313110.1103/PhysRevResearch.5.033131Gate-tunable Josephson diode in proximitized InAs supercurrent interferometersCarlo CiacciaRoy HallerAsbjørn C. C. DrachmannTyler LindemannMichael J. ManfraConstantin SchradeChristian SchönenbergerThe Josephson diode (JD) is a nonreciprocal circuit element that supports a larger critical current in one direction compared to the other. This effect has gained growing interest because of promising applications in superconducting electronic circuits with low power consumption. Some implementations of a JD rely on breaking the inversion symmetry in the material used to realize Josephson junctions (JJs), but recent theoretical proposals have suggested that the effect can also be engineered by combining two JJs hosting highly transmitting Andreev bound states in a Superconducting Quantum Interference Device (SQUID) at a small, but finite flux bias. We have realized a SQUID with two JJs fabricated in a proximitized InAs two-dimensional electron gas (2DEG). We demonstrate gate control of the diode efficiency from zero up to around 30% at specific flux bias values which comes close to the maximum of ∼40% predicated in Souto et al. [Phys. Rev. Lett. 129, 267702 (2022)0031-900710.1103/PhysRevLett.129.267702]. The key ingredients to the JD effect in the SQUID arrangement is the presence of highly transmitting channels in the JJs, a flux bias, and an asymmetry between the two SQUID arms.http://doi.org/10.1103/PhysRevResearch.5.033131 |
| spellingShingle | Carlo Ciaccia Roy Haller Asbjørn C. C. Drachmann Tyler Lindemann Michael J. Manfra Constantin Schrade Christian Schönenberger Gate-tunable Josephson diode in proximitized InAs supercurrent interferometers Physical Review Research |
| title | Gate-tunable Josephson diode in proximitized InAs supercurrent interferometers |
| title_full | Gate-tunable Josephson diode in proximitized InAs supercurrent interferometers |
| title_fullStr | Gate-tunable Josephson diode in proximitized InAs supercurrent interferometers |
| title_full_unstemmed | Gate-tunable Josephson diode in proximitized InAs supercurrent interferometers |
| title_short | Gate-tunable Josephson diode in proximitized InAs supercurrent interferometers |
| title_sort | gate tunable josephson diode in proximitized inas supercurrent interferometers |
| url | http://doi.org/10.1103/PhysRevResearch.5.033131 |
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