A method based on a dual frequency resonator to estimate physical parameters of superconductors from surface impedance measurements in a magnetic field
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866910792215953408 |
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| author | Pompeo, Nicola Torokhtii, Kostiantyn Alimenti, Andrea Silva, Enrico |
| author_facet | Pompeo, Nicola Torokhtii, Kostiantyn Alimenti, Andrea Silva, Enrico |
| contents | High frequency applications of superconductors in a dc magnetic field rely on the estimate of the characteristic crossover frequency $ν_c$ between low and high losses. Customarily, high sensitivity resonant techniques, intrinsically operating at discrete frequencies, are used to estimate $ν_c$. We exploit here a method based on a dual frequency resonator. We show that single-frequency evaluations of $ν_c$ lead to heavy underestimations of the superconductor surface resistance. We describe a combined analytical and experimental approach that gives more accurate estimates for $ν_c$, and additionally allows to test the underlying physical model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_11966 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A method based on a dual frequency resonator to estimate physical parameters of superconductors from surface impedance measurements in a magnetic field Pompeo, Nicola Torokhtii, Kostiantyn Alimenti, Andrea Silva, Enrico Superconductivity High frequency applications of superconductors in a dc magnetic field rely on the estimate of the characteristic crossover frequency $ν_c$ between low and high losses. Customarily, high sensitivity resonant techniques, intrinsically operating at discrete frequencies, are used to estimate $ν_c$. We exploit here a method based on a dual frequency resonator. We show that single-frequency evaluations of $ν_c$ lead to heavy underestimations of the superconductor surface resistance. We describe a combined analytical and experimental approach that gives more accurate estimates for $ν_c$, and additionally allows to test the underlying physical model. |
| title | A method based on a dual frequency resonator to estimate physical parameters of superconductors from surface impedance measurements in a magnetic field |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2501.11966 |