Distinct Suppression Mechanisms of Superconductivity by Magnetic Domains and Spin Fluctuations in EuFe2(As1-xPx)2 superconductors
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arXiv
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| Autores principales: | , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866911337056043008 |
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| author | Yuan, Mengju Zhou, Nan Ti, Ruixia Zhang, Long Zhang, Chenyang He, Tian Ou, Deliu Gao, Jingchun He, Mingquan Wang, Aifeng Ge, Jun-Yi Sun, Yue Chai, Yisheng |
| author_facet | Yuan, Mengju Zhou, Nan Ti, Ruixia Zhang, Long Zhang, Chenyang He, Tian Ou, Deliu Gao, Jingchun He, Mingquan Wang, Aifeng Ge, Jun-Yi Sun, Yue Chai, Yisheng |
| contents | Using ac composite magnetoelectric technique, we map the phase diagrams of EuFe(As1-xPx)2 to resolve the interplay between superconductivity and ferromagnetism. For samples with Tc<TFM, the transition to a ferromagnetic multi-domain state suppresses Hc2 through the breakdown of Jaccarino-Peter compensation and enhanced magnetic scattering from inter-domain disorder, while Hirr is reduced due to vortex-antivortex pair nucleation at domain walls disrupting the vortex lattice. Conversely, for samples with Tc>TFM, strong short-range spin correlations and phase boundaries within a multiphase coexistence regime near the triple point act as potent pair-breaking centers, leading to pronounced Hc2 suppression. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_20364 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Distinct Suppression Mechanisms of Superconductivity by Magnetic Domains and Spin Fluctuations in EuFe2(As1-xPx)2 superconductors Yuan, Mengju Zhou, Nan Ti, Ruixia Zhang, Long Zhang, Chenyang He, Tian Ou, Deliu Gao, Jingchun He, Mingquan Wang, Aifeng Ge, Jun-Yi Sun, Yue Chai, Yisheng Superconductivity Materials Science Using ac composite magnetoelectric technique, we map the phase diagrams of EuFe(As1-xPx)2 to resolve the interplay between superconductivity and ferromagnetism. For samples with Tc<TFM, the transition to a ferromagnetic multi-domain state suppresses Hc2 through the breakdown of Jaccarino-Peter compensation and enhanced magnetic scattering from inter-domain disorder, while Hirr is reduced due to vortex-antivortex pair nucleation at domain walls disrupting the vortex lattice. Conversely, for samples with Tc>TFM, strong short-range spin correlations and phase boundaries within a multiphase coexistence regime near the triple point act as potent pair-breaking centers, leading to pronounced Hc2 suppression. |
| title | Distinct Suppression Mechanisms of Superconductivity by Magnetic Domains and Spin Fluctuations in EuFe2(As1-xPx)2 superconductors |
| topic | Superconductivity Materials Science |
| url | https://arxiv.org/abs/2512.20364 |