Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb$_3$Sn
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arXiv
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| Format: | Preprint |
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2020
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| author | Alimenti, Andrea Pompeo, Nicola Torokhtii, Kostiantyn Spina, Tiziana Flükiger, René Muzzi, Luigi Silva, Enrico |
| author_facet | Alimenti, Andrea Pompeo, Nicola Torokhtii, Kostiantyn Spina, Tiziana Flükiger, René Muzzi, Luigi Silva, Enrico |
| contents | The high frequency vortex motion in Nb$_3$Sn was analyzed in this work up to 12 T. We used a dielectric loaded resonator tuned at 15 GHz to evaluate the surface impedance $Z$ of a Nb$_3$Sn bulk sample (24.8 at.\%Sn). From the field induced variation of $Z$, the high frequency vortex parameters (the pinning constant $k_p$, the depinning frequency $ν_p$ and the flux flow resistivity $ρ_{ff}$) were obtained over a large temperature and field range; their field and temperature dependence were analyzed. Comparison with other superconducting materials shows that high frequency applications in strong magnetic fields are also feasible with Nb$_3$Sn. In the present work, we report the first measurements about the microwave response in Nb$_3$Sn in strong magnetic fields. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2008_11656 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb$_3$Sn Alimenti, Andrea Pompeo, Nicola Torokhtii, Kostiantyn Spina, Tiziana Flükiger, René Muzzi, Luigi Silva, Enrico Superconductivity The high frequency vortex motion in Nb$_3$Sn was analyzed in this work up to 12 T. We used a dielectric loaded resonator tuned at 15 GHz to evaluate the surface impedance $Z$ of a Nb$_3$Sn bulk sample (24.8 at.\%Sn). From the field induced variation of $Z$, the high frequency vortex parameters (the pinning constant $k_p$, the depinning frequency $ν_p$ and the flux flow resistivity $ρ_{ff}$) were obtained over a large temperature and field range; their field and temperature dependence were analyzed. Comparison with other superconducting materials shows that high frequency applications in strong magnetic fields are also feasible with Nb$_3$Sn. In the present work, we report the first measurements about the microwave response in Nb$_3$Sn in strong magnetic fields. |
| title | Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb$_3$Sn |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2008.11656 |