Magnetic edge fields in UTe$_2$ near zero background fields
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
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| _version_ | 1866917860723392512 |
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| author | Iguchi, Yusuke Man, Huiyuan Thomas, S. M. Ronning, Filip Ishizuka, Jun Sigrist, Manfred Rosa, Priscila F. S. Moler, Kathryn A. |
| author_facet | Iguchi, Yusuke Man, Huiyuan Thomas, S. M. Ronning, Filip Ishizuka, Jun Sigrist, Manfred Rosa, Priscila F. S. Moler, Kathryn A. |
| contents | Chiral superconductors are theorized to exhibit spontaneous edge currents. Here, we found magnetic fields at the edges of UTe$_2$, a candidate odd-parity chiral superconductor, that seem to agree with predictions for a chiral order parameter. However, we did not detect the chiral domains that would be expected, and recent polar Kerr and muon spin relaxation data in nominally clean samples argue against chiral superconductivity. Our results show that hidden sources of magnetism must be carefully ruled out when using spontaneous edge currents to identify chiral superconductivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_07668 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Magnetic edge fields in UTe$_2$ near zero background fields Iguchi, Yusuke Man, Huiyuan Thomas, S. M. Ronning, Filip Ishizuka, Jun Sigrist, Manfred Rosa, Priscila F. S. Moler, Kathryn A. Superconductivity Chiral superconductors are theorized to exhibit spontaneous edge currents. Here, we found magnetic fields at the edges of UTe$_2$, a candidate odd-parity chiral superconductor, that seem to agree with predictions for a chiral order parameter. However, we did not detect the chiral domains that would be expected, and recent polar Kerr and muon spin relaxation data in nominally clean samples argue against chiral superconductivity. Our results show that hidden sources of magnetism must be carefully ruled out when using spontaneous edge currents to identify chiral superconductivity. |
| title | Magnetic edge fields in UTe$_2$ near zero background fields |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2409.07668 |