Doubled Shapiro steps in a dynamic axion insulator Josephson junction
Abstract Dynamic axion insulators feature a time-dependent axion field that can be induced by antiferromagnetic resonance. Here, we show that a Josephson junction incorporating this dynamic axion insulator between two superconductors exhibits striking doubled Shapiro steps wherein all odd steps are...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-10-01
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| Series: | npj Quantum Materials |
| Online Access: | https://doi.org/10.1038/s41535-024-00692-w |
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| author | Yu-Hang Li Zi-Qian Zhou Ran Cheng Hua Jiang X. C. Xie |
| author_facet | Yu-Hang Li Zi-Qian Zhou Ran Cheng Hua Jiang X. C. Xie |
| author_sort | Yu-Hang Li |
| collection | DOAJ |
| description | Abstract Dynamic axion insulators feature a time-dependent axion field that can be induced by antiferromagnetic resonance. Here, we show that a Josephson junction incorporating this dynamic axion insulator between two superconductors exhibits striking doubled Shapiro steps wherein all odd steps are completely suppressed in the joint presence of a DC bias and a static magnetic field. The resistively shunted junction simulation confirms that these doubled Shapiro steps originate from the distinctive axion electrodynamics driven by the antiferromagnetic resonance, which thus not only furnishes a hallmark to identify the dynamic axion insulator but also provides a method to evaluate its mass term. Furthermore, the experimentally feasible differential conductance is also determined. Our work holds significant importance in condensed matter physics and materials science for understanding the dynamic axion insulator, paving the way for its further exploration and applications. |
| format | Article |
| id | doaj-art-ceeeff47f92b4144976b6ae4e0e97146 |
| institution | OA Journals |
| issn | 2397-4648 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Materials |
| spelling | doaj-art-ceeeff47f92b4144976b6ae4e0e971462025-08-20T02:11:23ZengNature Portfolionpj Quantum Materials2397-46482024-10-01911710.1038/s41535-024-00692-wDoubled Shapiro steps in a dynamic axion insulator Josephson junctionYu-Hang Li0Zi-Qian Zhou1Ran Cheng2Hua Jiang3X. C. Xie4School of Physics, Nankai UniversityInternational Center for Quantum Materials, School of Physics, Peking UniversityDepartment of Electrical and Computer Engineering, University of CaliforniaInterdisciplinary Center for Theoretical Physics and Information Sciences (ICTPIS), Fudan UniversityInternational Center for Quantum Materials, School of Physics, Peking UniversityAbstract Dynamic axion insulators feature a time-dependent axion field that can be induced by antiferromagnetic resonance. Here, we show that a Josephson junction incorporating this dynamic axion insulator between two superconductors exhibits striking doubled Shapiro steps wherein all odd steps are completely suppressed in the joint presence of a DC bias and a static magnetic field. The resistively shunted junction simulation confirms that these doubled Shapiro steps originate from the distinctive axion electrodynamics driven by the antiferromagnetic resonance, which thus not only furnishes a hallmark to identify the dynamic axion insulator but also provides a method to evaluate its mass term. Furthermore, the experimentally feasible differential conductance is also determined. Our work holds significant importance in condensed matter physics and materials science for understanding the dynamic axion insulator, paving the way for its further exploration and applications.https://doi.org/10.1038/s41535-024-00692-w |
| spellingShingle | Yu-Hang Li Zi-Qian Zhou Ran Cheng Hua Jiang X. C. Xie Doubled Shapiro steps in a dynamic axion insulator Josephson junction npj Quantum Materials |
| title | Doubled Shapiro steps in a dynamic axion insulator Josephson junction |
| title_full | Doubled Shapiro steps in a dynamic axion insulator Josephson junction |
| title_fullStr | Doubled Shapiro steps in a dynamic axion insulator Josephson junction |
| title_full_unstemmed | Doubled Shapiro steps in a dynamic axion insulator Josephson junction |
| title_short | Doubled Shapiro steps in a dynamic axion insulator Josephson junction |
| title_sort | doubled shapiro steps in a dynamic axion insulator josephson junction |
| url | https://doi.org/10.1038/s41535-024-00692-w |
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