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26 April 2024

» arxiv » 1912.8414

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Giant enhancement of critical current density at high field in superconducting (Li,Fe)OHFeSe films by Mn doping
Dong Li ; Jie Yuan ; Peipei Shen ; Chuanying Xi ; Jinpeng Tian ; Shunli Ni ; Jingsong Zhang ; Zhongxu Wei ; Wei Hu ; Zian Li ; Li Yu ; Jun Miao ; Fang Zhou ; Li Pi ; Kui jin ; Xiaoli Dong ; Zhongxian Zhao ;
Date:	18 Dec 2019
Abstract:	Critical current density (Jc) is one of the major limiting factors for high field applications of iron-based superconductors. Here, we report that Mn-ions are successfully incorporated into nontoxic superconducting (Li,Fe)OHFeSe films. Remarkably, the Jc is significantly enhanced from 0.03 to 0.32 MA/cm^2 under 33 T, and the vortex pinning force density monotonically increases up to 106 GN/m^3, which is the highest record so far among all iron-based superconductors. Our results demonstrate that Mn incorporation is an effective method to optimize the performance of (Li,Fe)OHFeSe films, offering a promising candidate for high-field applications.
Source:	arXiv, 1912.8414
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