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arXiv · 2512.20364

Distinct Suppression Mechanisms of Superconductivity by Magnetic Domains and Spin Fluctuations in EuFe2(As1-xPx)2 superconductors

Mengju Yuan·Nan Zhou·Ruixia Ti·Long Zhang·Chenyang Zhang·Tian He·Deliu Ou·Jingchun Gao·Mingquan He·Aifeng Wang·Jun-Yi Ge·Yue Sun·Yisheng Chai
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Abstract

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, 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.

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Mengju Yuan, Nan Zhou, Ruixia Ti, Long Zhang, Chenyang Zhang, Tian He, Deliu Ou, Jingchun Gao, Mingquan He, Aifeng Wang, Jun-Yi Ge, Yue Sun, Yisheng Chai. 2025-12-23. Distinct Suppression Mechanisms of Superconductivity by Magnetic Domains and Spin Fluctuations in EuFe2(As1-xPx)2 superconductors. https://arxiv.org/abs/2512.20364

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