Niobium in clean limit: an intrinsic type-I superconductor
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arXiv
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| Format: | Preprint |
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2022
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| _version_ | 1866911894915252224 |
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| author | Prozorov, Ruslan Zarea, Mehdi Sauls, James A. |
| author_facet | Prozorov, Ruslan Zarea, Mehdi Sauls, James A. |
| contents | Niobium is one of the most researched superconductors, both theoretically and experimentally. It is enormously significant in all branches of superconducting applications, from powerful magnets to quantum computing. It is, therefore, imperative to understand its fundamental properties in great detail. Here we use the results of recent microscopic calculations of anisotropic electronic, phonon, and superconducting properties, and apply thermodynamic criterion for the type of superconductivity, more accurate and straightforward than a conventional Ginzburg-Landau parameter $κ$ - based delineation, to show that pure niobium is a type-I superconductor in the clean limit. However, disorder (impurities, defects, strain, stress) pushes it to become a type-II superconductor. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2207_11829 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Niobium in clean limit: an intrinsic type-I superconductor Prozorov, Ruslan Zarea, Mehdi Sauls, James A. Superconductivity Quantum Physics Niobium is one of the most researched superconductors, both theoretically and experimentally. It is enormously significant in all branches of superconducting applications, from powerful magnets to quantum computing. It is, therefore, imperative to understand its fundamental properties in great detail. Here we use the results of recent microscopic calculations of anisotropic electronic, phonon, and superconducting properties, and apply thermodynamic criterion for the type of superconductivity, more accurate and straightforward than a conventional Ginzburg-Landau parameter $κ$ - based delineation, to show that pure niobium is a type-I superconductor in the clean limit. However, disorder (impurities, defects, strain, stress) pushes it to become a type-II superconductor. |
| title | Niobium in clean limit: an intrinsic type-I superconductor |
| topic | Superconductivity Quantum Physics |
| url | https://arxiv.org/abs/2207.11829 |