Tunable superconducting diode effect in higher-harmonic InSb nanosheet interferometers
Superconducting diodes, characterized by the nonreciprocal supercurrent flow, have gained significant attention for their potential in dissipationless electronics. This study presents a superconducting quantum interference device (SQUID) composed of two Al-InSb nanosheet Josephson junctions. Utilizi...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/adb6ce |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850239368265990144 |
|---|---|
| author | Xingjun Wu Ji-Yin Wang Haitian Su Shili Yan Dong Pan Jianhua Zhao Po Zhang H Q Xu |
| author_facet | Xingjun Wu Ji-Yin Wang Haitian Su Shili Yan Dong Pan Jianhua Zhao Po Zhang H Q Xu |
| author_sort | Xingjun Wu |
| collection | DOAJ |
| description | Superconducting diodes, characterized by the nonreciprocal supercurrent flow, have gained significant attention for their potential in dissipationless electronics. This study presents a superconducting quantum interference device (SQUID) composed of two Al-InSb nanosheet Josephson junctions. Utilizing prepatterned local backgates, we achieve a gate- and flux-tunable superconducting diode with controllable efficiency in both amplitude and sign. Numerical simulations attribute the diode effect to higher harmonics in the current-phase relation. Crucially, fractional Shapiro step experiments provide direct insights into the evolution of these higher harmonics with flux tuning, showcasing significant enhancements in the second-harmonic signatures of the SQUID near half-integer flux quanta. Furthermore, we investigate the microwave-assisted diode response and experimentally show that the polarity of the diode effect can be switched by the microwave power. These results demonstrate the potential of InSb nanosheet-based hybrid devices as highly tunable elements for use in dissipationless electronics. |
| format | Article |
| id | doaj-art-c77f71dd15c54faf9decde1f738042d6 |
| institution | OA Journals |
| issn | 1367-2630 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj-art-c77f71dd15c54faf9decde1f738042d62025-08-20T02:01:10ZengIOP PublishingNew Journal of Physics1367-26302025-01-0127202303110.1088/1367-2630/adb6ceTunable superconducting diode effect in higher-harmonic InSb nanosheet interferometersXingjun Wu0https://orcid.org/0000-0002-9286-8688Ji-Yin Wang1Haitian Su2Shili Yan3Dong Pan4https://orcid.org/0000-0003-2067-6983Jianhua Zhao5Po Zhang6H Q Xu7https://orcid.org/0000-0001-6434-2569Beijing Academy of Quantum Information Sciences , Beijing 100193, People’s Republic of ChinaBeijing Academy of Quantum Information Sciences , Beijing 100193, People’s Republic of ChinaBeijing Key Laboratory of Quantum Devices, Key Laboratory for the Physics and Chemistry of Nanodevices, and School of Electronics, Peking University , Beijing 100871, People’s Republic of China; Institute of Condensed Matter and Material Physics, School of Physics, Peking University , Beijing 100871, People’s Republic of ChinaBeijing Academy of Quantum Information Sciences , Beijing 100193, People’s Republic of ChinaState Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors , Chinese Academy of Sciences, PO Box 912, Beijing 100083, People’s Republic of ChinaState Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors , Chinese Academy of Sciences, PO Box 912, Beijing 100083, People’s Republic of ChinaBeijing Academy of Quantum Information Sciences , Beijing 100193, People’s Republic of ChinaBeijing Academy of Quantum Information Sciences , Beijing 100193, People’s Republic of China; Beijing Key Laboratory of Quantum Devices, Key Laboratory for the Physics and Chemistry of Nanodevices, and School of Electronics, Peking University , Beijing 100871, People’s Republic of ChinaSuperconducting diodes, characterized by the nonreciprocal supercurrent flow, have gained significant attention for their potential in dissipationless electronics. This study presents a superconducting quantum interference device (SQUID) composed of two Al-InSb nanosheet Josephson junctions. Utilizing prepatterned local backgates, we achieve a gate- and flux-tunable superconducting diode with controllable efficiency in both amplitude and sign. Numerical simulations attribute the diode effect to higher harmonics in the current-phase relation. Crucially, fractional Shapiro step experiments provide direct insights into the evolution of these higher harmonics with flux tuning, showcasing significant enhancements in the second-harmonic signatures of the SQUID near half-integer flux quanta. Furthermore, we investigate the microwave-assisted diode response and experimentally show that the polarity of the diode effect can be switched by the microwave power. These results demonstrate the potential of InSb nanosheet-based hybrid devices as highly tunable elements for use in dissipationless electronics.https://doi.org/10.1088/1367-2630/adb6ceSQUIDAC Josephson effectJosephson junctionnon-reciprocal transportdiodesemiconductor nanosheet |
| spellingShingle | Xingjun Wu Ji-Yin Wang Haitian Su Shili Yan Dong Pan Jianhua Zhao Po Zhang H Q Xu Tunable superconducting diode effect in higher-harmonic InSb nanosheet interferometers New Journal of Physics SQUID AC Josephson effect Josephson junction non-reciprocal transport diode semiconductor nanosheet |
| title | Tunable superconducting diode effect in higher-harmonic InSb nanosheet interferometers |
| title_full | Tunable superconducting diode effect in higher-harmonic InSb nanosheet interferometers |
| title_fullStr | Tunable superconducting diode effect in higher-harmonic InSb nanosheet interferometers |
| title_full_unstemmed | Tunable superconducting diode effect in higher-harmonic InSb nanosheet interferometers |
| title_short | Tunable superconducting diode effect in higher-harmonic InSb nanosheet interferometers |
| title_sort | tunable superconducting diode effect in higher harmonic insb nanosheet interferometers |
| topic | SQUID AC Josephson effect Josephson junction non-reciprocal transport diode semiconductor nanosheet |
| url | https://doi.org/10.1088/1367-2630/adb6ce |
| work_keys_str_mv | AT xingjunwu tunablesuperconductingdiodeeffectinhigherharmonicinsbnanosheetinterferometers AT jiyinwang tunablesuperconductingdiodeeffectinhigherharmonicinsbnanosheetinterferometers AT haitiansu tunablesuperconductingdiodeeffectinhigherharmonicinsbnanosheetinterferometers AT shiliyan tunablesuperconductingdiodeeffectinhigherharmonicinsbnanosheetinterferometers AT dongpan tunablesuperconductingdiodeeffectinhigherharmonicinsbnanosheetinterferometers AT jianhuazhao tunablesuperconductingdiodeeffectinhigherharmonicinsbnanosheetinterferometers AT pozhang tunablesuperconductingdiodeeffectinhigherharmonicinsbnanosheetinterferometers AT hqxu tunablesuperconductingdiodeeffectinhigherharmonicinsbnanosheetinterferometers |