Probing disorder-induced time-reversal symmetry breaking in Josephson junctions
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866913570468397056 |
|---|---|
| author | Wu, Yu Huang, Daiqiang Zhang, Huanyu Guarino, Anita Fittipaldi, Rosalba Ma, Chao Hu, Wenjie Chang, Niu Wang, Zhen Yu, Weichao Yerin, Yuriy Vecchione, Antonio Liu, Yang Cuoco, Mario Guo, Hangwen Shen, Jian |
| author_facet | Wu, Yu Huang, Daiqiang Zhang, Huanyu Guarino, Anita Fittipaldi, Rosalba Ma, Chao Hu, Wenjie Chang, Niu Wang, Zhen Yu, Weichao Yerin, Yuriy Vecchione, Antonio Liu, Yang Cuoco, Mario Guo, Hangwen Shen, Jian |
| contents | The relation between superconductivity and time-reversal symmetry (TRS) is one of the most fascinating problems in condensed matter physics. Although most superconductors inherently possess TRS, nonmagnetic disorder can induce states that demonstrate the breaking of this symmetry. Yet, the identification of experimental signatures of superconductivity with broken TRS remains a challenge. Here, we fabricate vertical Josephson junctions using metallic superconductor (Al) and ion bombarded Sr2RuO4 to study disorder-driven TRS breaking effects. We observe persistent magnetoresistive hysteresis behavior dependent on the disorder deposition time that provides evidence of TRS breaking below the superconducting transition temperature. Field and temperature dependent measurements suggest that the observed effects arise from disorder-induced anomalous flux in Sr2RuO4 which can be sensitively detected by superconducting Al. Our experimental results can be accounted within a physical framework of disorder-induced reconstruction of the superconducting order parameter as described within a multiband Ginzburg-Landau approach. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_01232 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Probing disorder-induced time-reversal symmetry breaking in Josephson junctions Wu, Yu Huang, Daiqiang Zhang, Huanyu Guarino, Anita Fittipaldi, Rosalba Ma, Chao Hu, Wenjie Chang, Niu Wang, Zhen Yu, Weichao Yerin, Yuriy Vecchione, Antonio Liu, Yang Cuoco, Mario Guo, Hangwen Shen, Jian Superconductivity The relation between superconductivity and time-reversal symmetry (TRS) is one of the most fascinating problems in condensed matter physics. Although most superconductors inherently possess TRS, nonmagnetic disorder can induce states that demonstrate the breaking of this symmetry. Yet, the identification of experimental signatures of superconductivity with broken TRS remains a challenge. Here, we fabricate vertical Josephson junctions using metallic superconductor (Al) and ion bombarded Sr2RuO4 to study disorder-driven TRS breaking effects. We observe persistent magnetoresistive hysteresis behavior dependent on the disorder deposition time that provides evidence of TRS breaking below the superconducting transition temperature. Field and temperature dependent measurements suggest that the observed effects arise from disorder-induced anomalous flux in Sr2RuO4 which can be sensitively detected by superconducting Al. Our experimental results can be accounted within a physical framework of disorder-induced reconstruction of the superconducting order parameter as described within a multiband Ginzburg-Landau approach. |
| title | Probing disorder-induced time-reversal symmetry breaking in Josephson junctions |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2411.01232 |