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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2509.18781 |
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| _version_ | 1866912601547472896 |
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| author | Xu, Xiaoying Qin, Wei Shen, Yuelin Huang, Zixuan Zhou, Zhuoya Wang, Zirao Li, Yufan |
| author_facet | Xu, Xiaoying Qin, Wei Shen, Yuelin Huang, Zixuan Zhou, Zhuoya Wang, Zirao Li, Yufan |
| contents | Chiral superconductivity is a novel superconducting phase characterized by order parameters that break the time-reversal symmetry, endowing the state with a definite handedness. Unlike conventional superconductors, the Cooper pairs in a chiral superconductor carry nonzero orbital angular momentum. Through coupling with an external magnetic field, the finite angular momentum of the Cooper pair modulates the temperature-magnetic field phase boundary in a distinctive way, which could serve as an experimental signature of the chiral superconducting state. Here we demonstrate that the chiral signature can be detected in mesoscopic superconducting rings of $β$-Bi$_2$Pd, manifesting as a linear-in-field modulation of the critical temperature in the Little-Parks effect. Our findings establish a new experimental method for detecting the chiral superconductivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_18781 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Signature of chiral superconducting order parameter evidenced in mesoscopic superconductors Xu, Xiaoying Qin, Wei Shen, Yuelin Huang, Zixuan Zhou, Zhuoya Wang, Zirao Li, Yufan Superconductivity Mesoscale and Nanoscale Physics Chiral superconductivity is a novel superconducting phase characterized by order parameters that break the time-reversal symmetry, endowing the state with a definite handedness. Unlike conventional superconductors, the Cooper pairs in a chiral superconductor carry nonzero orbital angular momentum. Through coupling with an external magnetic field, the finite angular momentum of the Cooper pair modulates the temperature-magnetic field phase boundary in a distinctive way, which could serve as an experimental signature of the chiral superconducting state. Here we demonstrate that the chiral signature can be detected in mesoscopic superconducting rings of $β$-Bi$_2$Pd, manifesting as a linear-in-field modulation of the critical temperature in the Little-Parks effect. Our findings establish a new experimental method for detecting the chiral superconductivity. |
| title | Signature of chiral superconducting order parameter evidenced in mesoscopic superconductors |
| topic | Superconductivity Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2509.18781 |