Giant enhancement of critical current density at high field in superconducting (Li,Fe)OHFeSe films by Mn doping

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.

6 pages, 5 figures

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Cited by in corpus (6)

• Significant enhancement of critical current density in H+-intercalated FeSe single crystal
• Quasi two-dimensional nature of high-Tc superconductivity in iron-based (Li,Fe)OHFeSe
• A disorder-sensitive emergent vortex phase identified in high-Tc superconductor (Li,Fe)OHFeSe
• Status of Iron Based Superconductors: characteristics and relevant properties for applications
• Increase of critical current density in FeSe superconductor by strain effect
• Extracting intrinsic superconducting properties in intercalated layered superconductors using an extended 2D Tinkham model