Broken time-reversal symmetry in a new non-centrosymmetric superconductor Re8NbTa
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arXiv
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| Autori principali: | , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866917567813124096 |
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| author | Kushwaha, R. K. Arushi Sharma, S. Srivastava, S. Meena, P. K. Pula, M. Beare, J. Gautreau, J. Hillier, A. D. Luke, G. M. Singh, R. P. |
| author_facet | Kushwaha, R. K. Arushi Sharma, S. Srivastava, S. Meena, P. K. Pula, M. Beare, J. Gautreau, J. Hillier, A. D. Luke, G. M. Singh, R. P. |
| contents | Re-based superconductors provide a rich platform for the study of unconventional superconductivity. We have investigated the superconducting properties of Re$_{8}$NbTa, a new noncentrosymmetric cubic ($α$-Mn structure) rhenium-based ternary superconductor using transport, magnetization, specific heat, and muon spin rotation/relaxation ($μ$SR) measurements. Specific heat and transverse field $μ$SR measurements suggest moderately coupled fully gapped superconductivity, well described by BCS theory. However, our zero-field $μ$SR measurements reveal a small internal field onsetting around the superconducting T$_c$, indicating that the superconducting order parameter breaks the time-reversal symmetry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_07614 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Broken time-reversal symmetry in a new non-centrosymmetric superconductor Re8NbTa Kushwaha, R. K. Arushi Sharma, S. Srivastava, S. Meena, P. K. Pula, M. Beare, J. Gautreau, J. Hillier, A. D. Luke, G. M. Singh, R. P. Superconductivity Re-based superconductors provide a rich platform for the study of unconventional superconductivity. We have investigated the superconducting properties of Re$_{8}$NbTa, a new noncentrosymmetric cubic ($α$-Mn structure) rhenium-based ternary superconductor using transport, magnetization, specific heat, and muon spin rotation/relaxation ($μ$SR) measurements. Specific heat and transverse field $μ$SR measurements suggest moderately coupled fully gapped superconductivity, well described by BCS theory. However, our zero-field $μ$SR measurements reveal a small internal field onsetting around the superconducting T$_c$, indicating that the superconducting order parameter breaks the time-reversal symmetry. |
| title | Broken time-reversal symmetry in a new non-centrosymmetric superconductor Re8NbTa |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2401.07614 |