Anomalous behaviour of the temperature dependencies of the upper critical fields in (Dy1-xErx)Rh3.8Ru0.2B4 (x=0, 0.2, 0.4)
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866908844826820608 |
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| author | Terekhov, A. V. Kazakov, A. P. Fesenko, P. M. Yarovyi, V. M. Zolochevskii, I. V. Ishchenko, L. O. |
| author_facet | Terekhov, A. V. Kazakov, A. P. Fesenko, P. M. Yarovyi, V. M. Zolochevskii, I. V. Ishchenko, L. O. |
| contents | For the first time, a detailed analysis of the behaviour of the temperature dependences of the upper critical fields Hc2(T) has been carried out in the compounds (Dy1-xErx)Rh3.8Ru0.2B4 (x = 0, 0.2, 0.4). It is found that the Hc2(T) in (Dy0.8Er0.2)Rh3.8Ru0.2B4 has an inflection point at 3 kOe, which may be related to the low-temperature magnetic ordering, while a more exotic mechanism caused by the transition from ordinary singlet to triplet superconductivity is not excluded. For the first time, the experimental Hc2(T) dependences of (Dy1-xErx)Rh3.8Ru0.2B4 (x = 0, 0.2, 0.4) compounds have been fitted within the framework of Werthamer-Helfand-Hohenberg theory (WHH) with the Maki parameter alpha > 0, indicating that spin-paramagnetic effects due to magnetic exchange interactions play an essential role in suppressing superconductivity in these compounds. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2503_07024 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Anomalous behaviour of the temperature dependencies of the upper critical fields in (Dy1-xErx)Rh3.8Ru0.2B4 (x=0, 0.2, 0.4) Terekhov, A. V. Kazakov, A. P. Fesenko, P. M. Yarovyi, V. M. Zolochevskii, I. V. Ishchenko, L. O. Superconductivity Materials Science Strongly Correlated Electrons For the first time, a detailed analysis of the behaviour of the temperature dependences of the upper critical fields Hc2(T) has been carried out in the compounds (Dy1-xErx)Rh3.8Ru0.2B4 (x = 0, 0.2, 0.4). It is found that the Hc2(T) in (Dy0.8Er0.2)Rh3.8Ru0.2B4 has an inflection point at 3 kOe, which may be related to the low-temperature magnetic ordering, while a more exotic mechanism caused by the transition from ordinary singlet to triplet superconductivity is not excluded. For the first time, the experimental Hc2(T) dependences of (Dy1-xErx)Rh3.8Ru0.2B4 (x = 0, 0.2, 0.4) compounds have been fitted within the framework of Werthamer-Helfand-Hohenberg theory (WHH) with the Maki parameter alpha > 0, indicating that spin-paramagnetic effects due to magnetic exchange interactions play an essential role in suppressing superconductivity in these compounds. |
| title | Anomalous behaviour of the temperature dependencies of the upper critical fields in (Dy1-xErx)Rh3.8Ru0.2B4 (x=0, 0.2, 0.4) |
| topic | Superconductivity Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2503.07024 |