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| Autori principali: | , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2401.08279 |
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| _version_ | 1866911758862516224 |
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| author | Torsello, Daniele Piatti, Erik Fracasso, Michela Gerbaldo, Roberto Gozzelino, Laura Yi, Xiaolei Xing, Xiangzhuo Shi, Zhixiang Daghero, Dario Ghigo, Gianluca |
| author_facet | Torsello, Daniele Piatti, Erik Fracasso, Michela Gerbaldo, Roberto Gozzelino, Laura Yi, Xiaolei Xing, Xiangzhuo Shi, Zhixiang Daghero, Dario Ghigo, Gianluca |
| contents | We report on the effects of 3.5 MeV proton irradiation in RbCa$_2$Fe$_4$As$_4$F$_2$, an iron-based superconductor with unusual properties in between those of the pnictides and of the cuprate high-temperature superconductors. We studied how structural disorder introduced by ion bombardment affects the critical temperature, superfluid density and gap values by combining a coplanar waveguide resonator technique, electric transport measurements and point-contact Andreev-reflection spectroscopy. We find an unusually weak dependence of the superconducting properties on the amount of disorder in this material when compared to other iron-based superconductors under comparable irradiation conditions. The nodal multigap state exhibited by pristine RbCa$_2$Fe$_4$As$_4$F$_2$ is also robust against proton irradiation, with a two-band $d-d$ model being the one that best fits the experimental data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_08279 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Unusually weak irradiation effects in anisotropic iron-based superconductor RbCa2Fe4As4F2 Torsello, Daniele Piatti, Erik Fracasso, Michela Gerbaldo, Roberto Gozzelino, Laura Yi, Xiaolei Xing, Xiangzhuo Shi, Zhixiang Daghero, Dario Ghigo, Gianluca Superconductivity Mesoscale and Nanoscale Physics Materials Science We report on the effects of 3.5 MeV proton irradiation in RbCa$_2$Fe$_4$As$_4$F$_2$, an iron-based superconductor with unusual properties in between those of the pnictides and of the cuprate high-temperature superconductors. We studied how structural disorder introduced by ion bombardment affects the critical temperature, superfluid density and gap values by combining a coplanar waveguide resonator technique, electric transport measurements and point-contact Andreev-reflection spectroscopy. We find an unusually weak dependence of the superconducting properties on the amount of disorder in this material when compared to other iron-based superconductors under comparable irradiation conditions. The nodal multigap state exhibited by pristine RbCa$_2$Fe$_4$As$_4$F$_2$ is also robust against proton irradiation, with a two-band $d-d$ model being the one that best fits the experimental data. |
| title | Unusually weak irradiation effects in anisotropic iron-based superconductor RbCa2Fe4As4F2 |
| topic | Superconductivity Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2401.08279 |