Unconventional superconductivity in a non-centrosymmetric $α$-Mn alloy NbTaOs$_{2}$
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915343533867008 |
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| author | Kushwaha, R. K. Arushi Jangid, S. Meena, P. K. Stewart, R. Hillier, A. D. Singh, R. P. |
| author_facet | Kushwaha, R. K. Arushi Jangid, S. Meena, P. K. Stewart, R. Hillier, A. D. Singh, R. P. |
| contents | Non-centrosymmetric superconductors have emerged as a fascinating avenue for exploring unconventional superconductivity. Their broken inversion and time-reversal symmetries make them prime candidates for realizing the intrinsic superconducting diode effect (SDE). In this work, we synthesize the ternary non-centrosymmetric $α$-Mn alloy NbTaOs$_{2}$ and conduct a comprehensive investigation of its superconducting properties through resistivity, magnetization, specific heat and muon spin rotation/relaxation ($μ$SR) techniques. Our transverse field-$μ$SR and specific heat results provide evidence of a moderately coupled, fully-gaped superconducting state. Zero field-$μ$SR measurements reveal a subtle increase in the relaxation rate below the transition temperature, suggesting time reversal symmetry breaking in the superconducting ground state of NbTaOs$_{2}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_12449 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Unconventional superconductivity in a non-centrosymmetric $α$-Mn alloy NbTaOs$_{2}$ Kushwaha, R. K. Arushi Jangid, S. Meena, P. K. Stewart, R. Hillier, A. D. Singh, R. P. Superconductivity Non-centrosymmetric superconductors have emerged as a fascinating avenue for exploring unconventional superconductivity. Their broken inversion and time-reversal symmetries make them prime candidates for realizing the intrinsic superconducting diode effect (SDE). In this work, we synthesize the ternary non-centrosymmetric $α$-Mn alloy NbTaOs$_{2}$ and conduct a comprehensive investigation of its superconducting properties through resistivity, magnetization, specific heat and muon spin rotation/relaxation ($μ$SR) techniques. Our transverse field-$μ$SR and specific heat results provide evidence of a moderately coupled, fully-gaped superconducting state. Zero field-$μ$SR measurements reveal a subtle increase in the relaxation rate below the transition temperature, suggesting time reversal symmetry breaking in the superconducting ground state of NbTaOs$_{2}$. |
| title | Unconventional superconductivity in a non-centrosymmetric $α$-Mn alloy NbTaOs$_{2}$ |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2506.12449 |