Investigation of the effect of conformal pinning array on critical current density in infinitely long superconductors

IF 1.3 3区物理与天体物理 Q4 PHYSICS, APPLIED

Physica C-superconductivity and Its Applications Pub Date : 2024-04-03 DOI:10.1016/j.physc.2024.1354498

Sara Zoveydavi , Mehdi Hosseini , Zahra Owjifard , Ali Moftakharzadeh

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引用次数: 0

Abstract

In this study, the influence of conformal pinning centers on enhancing the critical current density in superconductors has been investigated. To increase the critical current density, a square-pinned array with dimensions of 10λ by 10λ under two appropriate conformal transformations is considered. Initially, by specifying the forces acting on the vortices, the relevant Langevin equation for the vortices is solved. By solving this equation, the vortex positions versus time are determined, and using this information, the critical current density is calculated as a function of the magnetic field. Then, the critical current density is calculated for various conformal function parameters in a superconductor tape. The results indicate that after applying two conformal transformations with appropriate parameters, the critical current density could be increased at higher magnetic fields. Simulations demonstrate a 25% increase in critical current density in the optimal case.

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研究共形钉阵对无限长超导体临界电流密度的影响

本研究探讨了共形引脚中心对提高超导体临界电流密度的影响。为了提高临界电流密度，我们考虑了尺寸为 10λ x 10λ 的正方形针刺阵列在两种适当保角变换下的情况。首先，通过指定作用在涡流上的力，求解涡流的相关朗格文方程。通过求解该方程，可以确定涡旋位置与时间的关系，并利用这些信息计算出临界电流密度与磁场的关系。然后，计算了超导体磁带中各种保角函数参数的临界电流密度。结果表明，在应用两个具有适当参数的保角变换后，临界电流密度可在较高磁场下提高。模拟结果表明，在最佳情况下，临界电流密度提高了 25%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physica C-superconductivity and Its Applications 物理-物理：应用

CiteScore

2.70

自引率

11.80%

发文量

102

审稿时长

66 days

期刊介绍： Physica C (Superconductivity and its Applications) publishes peer-reviewed papers on novel developments in the field of superconductivity. Topics include discovery of new superconducting materials and elucidation of their mechanisms, physics of vortex matter, enhancement of critical properties of superconductors, identification of novel properties and processing methods that improve their performance and promote new routes to applications of superconductivity. The main goal of the journal is to publish: 1. Papers that substantially increase the understanding of the fundamental aspects and mechanisms of superconductivity and vortex matter through theoretical and experimental methods. 2. Papers that report on novel physical properties and processing of materials that substantially enhance their critical performance. 3. Papers that promote new or improved routes to applications of superconductivity and/or superconducting materials, and proof-of-concept novel proto-type superconducting devices. The editors of the journal will select papers that are well written and based on thorough research that provide truly novel insights.